DELL Inspiron 3451
Contents
1. Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 3 in Removing the hard drive 4 Remove the memory modules 5 Remove the wireless card 6 Remove the keyboard 7 Follow the procedure from step 1 to step 8 in Removing the palm rest 8 Follow the procedure from step 1 to step 6 in Removing the system 9 10 board Remove the display assembly Remove the display bezel Procedure 1 Remove the screws that secure the display panel to the display back cover 75 2 Turn the display panel over and place it on a clean surface 1 screws 4 2 display panel 3 Peeloffthe tape that secures the display cable to the display panel 76 4 Lift the latch and disconnect the display cable from the display back cover 1 display panel 2 latch 3 display cable 4 tape 5 display back cover 77 Replacing the display panel A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Place the display panel face down on a clean and flat surface 2 Slide the display cable into the display panel a2. 1 touch pad bracket 2 screws 3 4 Lift the latch and disconnect the touch pad cable from the touch pad 5 Peel off the tape that secures the touch pad to the palm rest assembly 40 6 Lift the touch pad off the palm rest assembly 1 tape 2 latch 4 palm rest assembly touch pad cable 41 Replacing the touch pad A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure Align the screw holes on the touch pad with the screw holes on the palm rest assembly and keep the touch pad in place 2 Adhere the tape that secures the touch pad to the palm rest assembly 3 Align the screw holes on the touch pad bracket with the screw holes on the palm rest assembly 4 Replace the screws that secure the touch pad bracket to the palm rest assembly 5 Turn the palm rest assembly over Post requisites 1 Follow the procedure from step 4 to step 11 in Replacing the palm rest 2 Replace the keyboard 3 Follow the procedure from step 4 to step 6 in Replacing the hard drive 4 Replace the base cover 5 Replace the battery 42 Removing the power button board A WARNING Befo
3. 16 A sse ident sev ive indeed es ated adeo 16 Replacing the base cover eese 17 Proceqdufte se etie eme tte tta 17 Post requisites ee hn eH e Resa wt aet 17 Removing the hard drive eeeeeeeeeeeee 18 A ta ns creen a fits 18 AAA E MU DA O 18 Replacing the hard drive eeeeeeeee 21 Procedures musco d eese e ed t eer ec d ety dr ce tee dint 21 POSE r QUulSit s i a eoe i eb IRE Lees eb Las nens ten 21 Removing the memory modules sss 22 Prer dulsitess oa LED b Gute T etti dir etu irae iet 22 Procedure ret ee eem e e ede t ee edis 22 Replacing the memory modules 24 Proc tia ld A DR HORE 24 Postre quisiera ti lo id ed 25 Removing the wireless card sess 26 PREREQUISITES 25 0 nonet e IER METRE RR TR ERR 26 Procedures e ae eh eee ee e he Re ae cg ra 26 Replacing the wireless card sess 28 Procedure eee Dto etr om Lon Pri ed m Een tae ee 28 PosSt redulsites 5 4 colada tao ala dde tee LU D ADM kB AA 28 Removing the keyboard eene 29 Prerequisites ten eroe e Renee me etu mi a e en 29 Procedure tte usce dioe d ubt vt be ame IR TESTE Hb cares bon e o 29 Replacing the keyboard eese 32 o A 32 Postsrequisites ra atentado A dm ub er e utu
4. cable to the system board Lift the latches and disconnect the display cable and O board cable from the system board 3 Disconnect the power adapter port cable from the system board 1 power adapter port cable 2 display cable tape 4 latches 2 5 system board 6 l O board cable 4 Remove the screw that secures the system board to the computer base 55 5 Liftthe system board off the computer base 1 system board 2 6 Turn the system board over N Remove the coin cell battery Follow the procedure from step 1 to step 3 in Removing thermal cooling assembly 54 Replacing the system board A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance NOTE Your computer s Service Tag is stored in the system board You must enter the Service Tag in the BIOS setup program after you replace the system board NOTE Replacing the system board removes any changes you have made to the BIOS using the BIOS setup program You must make the desired changes again after you replace the system board Procedure 1 Replace the coin cell battery 2 Follow the procedure from step 2 to step 4 in R
5. cables through the slot on the computer base 5 Slide the l O board cable into the I O board and press down on the latch to secure the cable Post requites 1 Follow the procedure from step 4 to step 8 in Replacing the system board 2 Follow the procedure from step 4 to step 11 in Replacing the palm rest 3 Replace the keyboard 4 Replace the wireless card 5 Replace the memory modules 6 Follow the procedure from step 4 to step 6 in Replacing the hard drive 7 Replace the base cover 8 Replace the battery 71 Removing the display bezel A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites Remove the battery Remove the base cover Follow the procedure from step 1 to step 3 in Removing the hard drive Remove the memory modules Remove the wireless card Remove the keyboard Follow the procedure from step 1 to step 8 in Removing the palm rest ON oU BRWYD H Follow the procedure from step 1 to step 6 in Removing the system board Procedure 1 Using your fingertips gently pry up the inner edges of the display bezel 72 2 Lift the displ
6. dell com regulatory_compliance Procedure 1 Slide the tabs on the base cover into the slots on the computer base and snap the base cover into place 2 Replace the screws that secure the base cover to the computer base Post requisites Replace the battery 17 Removing the hard drive A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance A CAUTION Hard drives are fragile Exercise care when handling the hard drive AN CAUTION To avoid data loss do not remove the hard drive while the computer is in sleep or on state Prerequisites 1 Remove the battery 2 Remove the base cover Procedure 1 Remove the screws that secure the hard drive assembly to the computer base 2 Liftthe latch and disconnect the hard drive cable from the system board 18 3 Liftthe hard drive assembly off the computer base 1 screws 4 2 hard drive assembly hard drive cable 4 latch 4 Remove the screws that secure the hard drive bracket to the hard drive assembly 5 Liftthe hard drive bracket off the hard drive assembly 19 6 Disconnect the interposer from the hard drive 1 23 4 1 screw
7. pry the palm rest assembly off the computer base using a plastic scribe 1 computer base 2 palm rest assembly 3 plastic scribe 7 Turn the computer over and open the display as far as possible 56 8 Lift the palm rest assembly at an angle and remove it from the computer base 1 palm rest assembly 2 computer base 9 Follow the procedure from step 1 to step 6 in Removing the touch pad 10 Follow the procedure from step 1 to step 4 in Removing the power button board 11 Follow the procedure from step 1 to step 4 in Removing the speakers 37 Replacing the palm rest A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Follow the procedure from step 1 to step 3 in Replacing the speakers 2 Follow the procedure from step 1 to step 4 in Replacing the power button board 3 Follow the procedure from step 1 to step 5 in Replacing the touch pad 4 Slide the speaker cable through the slot on the computer base 5 Align the screw holes on the palm rest assembly with the screw holes on the computer base 6 Replace the screws that secure the pa
8. to step 11 in Replacing the palm rest Replace the keyboard Follow the procedure from step 4 to step 6 in Replacing the hard drive Replace the base cover Replace the battery 51 Removing the system board A Es WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance NOTE Your computer s Service Tag is stored in the system board You must enter the Service Tag in the BIOS setup program after you replace the system board NOTE Replacing the system board removes any changes you have made to the BIOS using the BIOS setup program You must make the desired changes again after you replace the system board NOTE Before disconnecting the cables from the system board note the location of the connectors so that you can reconnect them correctly after you replace the system board Prerequisites oU NA NP Remove the battery Remove the base cover Follow the procedure from step 1 to step 3 in Removing the hard drive Remove the keyboard Follow the procedure from step 1 to step 8 in Removing the palm rest Procedure 1 2 52 Peel the tape that secures the display
9. with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Follow procedure from step 1 to step 3 in Replacing the fan 2 Align the screws on the thermal cooling assembly with the screw holes on the system board 3 n sequential order as indicated on the thermal cooling assembly tighten the captive screws that secure the thermal cooling assembly to the system board 4 Connect the fan cable to the system board Post requisites 1 Follow the procedure from step 3 to step 8 in Replacing the system board 2 Follow the procedure from step 4 to step 11 in Replacing the palm rest 3 Replace the keyboard 4 Replace the wireless card 5 Replace the memory modules 6 Follow the procedure from step 4 to step 6 in Replacing the hard drive 7 Replace the base cover 8 Replace the battery 62 Removing the fan A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_comp
10. A CAUTION Leaving stray or loose screws inside your computer may severely damage your computer 1 Replace all screws and ensure that no stray screws remain inside your computer 2 Connect any external devices peripherals and cables you removed before working on your computer 3 Replace any media cards discs and any other parts that you removed before working on your computer 4 Connect your computer and all attached devices to their electrical outlets 5 Turn on your computer 15 Removing the battery A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Close the display and turn the computer over 2 Slide the battery release latch to the unlock position 3 Liftthe battery at an angle and remove the battery from the battery bay 1 battery 2 battery release latch 4 Turn the computer over and open the display 5 Press and hold the power button for 5 seconds to ground the system board 14 Replacing the battery A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your compu
11. Inspiron 14 3000 Series Service Manual Computer Model Inspiron 14 3451 Regulatory Model P60G Regulatory Type P60G002 Notes Cautions and Warnings K NOTE A NOTE indicates important information that helps you make better use of your computer A CAUTION A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem A WARNING A WARNING indicates a potential for property damage personal injury or death Copyright 2015 Dell Inc All rights reserved This product is protected by U S and international copyright and intellectual property laws Dell and the Dell logo are trademarks of Dell Inc in the United States and or other jurisdictions All other marks and names mentioned herein may be trademarks of their respective companies 2015 01 Rev AOO Contents Before working inside your compulter 10 Before you begin eere Ie eec ede e 10 Safety Instructions ceo m tH DE tea edet te ped 10 Recommended tools sse nnne nnn en nnns 11 After working inside your computer 13 Removing the battery essen 14 POCO UE se tese eve ten iR er t He is 14 Replacing the battery acicoconinonnsionansrrocidanennaio nano danna canada candaracanin 15 ProcedUut dls 15 Removing the base COVEL seccceeceeseeeeeeeeeseeeeeeeeeeseeeeseeeeeee 16 Prerrequisito ett be e TR ERRARE ERE
12. Lift the latch and disconnect the O board cable from the I O board 67 5 Remove the l O board cable from the computer base 1 display assembly 2 computer base 3 1 O board cable 4 latch 6 Note the antenna cable routing and remove the antenna cable from its routing guides on the computer base 68 7 Note the display cable routing and remove the display cable from its routing guides on the computer base 1 display assembly 2 display cable 3 computer base 4 antenna cables 2 8 Remove the screws that secure the display hinges to the computer base 69 9 Lift the display assembly off the computer base 1 display assembly 2 screws 2 3 hinges 2 70 Replacing the display assembly A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure Align the screw holes on the display hinges with the screw holes on the computer base 2 Replace the screws that secure the display hinges to the computer base 3 Route the display cable through the routing guides on the computer base 4 Route the antenna cables through the routing guides on the computer base and slide the antenna
13. afety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery 2 Remove the base cover Procedure 1 Using your fingertips pry apart the securing clips on each end of the memory module slot until the memory module pops up 22 2 Slide and remove the memory module from the memory module slot 1 securing clips 2 2 memory module 25 Replacing the memory modules A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Align the notch on the memory module with the tab on the memory module slot 24 2 Slide the memory module firmly into the slot at an angle and press the memory module down until it clicks into place NOTE If you do not hear the click remove the memory module and reinstall it 1 notch 2 memory module securing clips 2 4 tab Post requisites 1 Replace the base cover 2 Replace the battery 25 Removing the wireless card A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working insid
14. ay bezel off the display assembly 1 display bezel 2 display panel 73 Replacing the display bezel A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure Align the display bezel with the display back cover and gently snap the display bezel into place Post requisites N e OANA UN RW 74 Replace the display assembly Follow the procedure from step 4 to step 8 in Removing the system board Follow the procedure from step 4 to step 11 in Removing the palm rest Replace the keyboard Replace the wireless card Replace the memory modules Follow the procedure from step 4 to step 6 in Replacing the hard drive Replace the base cover Replace the battery Removing the display panel A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance
15. cooling assembly Follow the procedure from step 3 to step 8 in Replacing the system board N Follow the procedure from step 4 to step 11 in Replacing the palm rest Replace the keyboard Replace the wireless card Replace the memory modules Follow the procedure from step 4 to step 6 in Replacing the hard drive Replace the base cover OANA NT HRW Replace the battery 65 Removing the display assembly A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 3 in Removing the hard drive 4 Remove the memory modules 5 Remove the wireless card 6 Remove the keyboard 7 Follow the procedure from step 1 to step 8 in Removing the palm rest 8 Follow the procedure from step 1 to step 6 in Removing the system board Procedure 1 Close the display and turn the computer over 66 2 Slide the antenna cables into the slot on the computer base 1 antenna cables 2 2 computer base 3 Turn the computer over and open the display 4
16. e 1 Slide the keyboard cable into the system board and press down on the latch to secure the cable 2 Carefully turn the keyboard over slide the tabs on the keyboard into the slots on the palm rest assembly and snap the keyboard into place Post requisites Replace the battery 32 Removing the palm rest A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites Remove the battery Remove the back cover Follow the procedure from step 1 to step 3 in Removing the hard drive hWDN BF Remove the keyboard Procedure 1 Remove the screws that secure the palm rest assembly to the computer base 33 2 Liftthe latches and disconnect the touch pad cable and power button cable from the system board 1 power button cable 2 screws 5 palm rest assembly 4 computer base 5 touch pad cable 6 latches 2 3 Close the display and turn the computer over 4 Remove the screws that secure the palm rest assembly to the computer base 34 5 Disconnect the speaker cable from the system board 1 screws 8 2 computer base speaker cable 35 6 Lift the computer base and
17. e White Auxiliary black triangle Black Post requisites 1 Replace the base cover 2 Replace the battery 28 Removing the keyboard A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites Remove the battery Procedure 1 Using a plastic scribe gently release the tabs that secure the keyboard to the palm rest assembly 29 2 Carefully turn the keyboard over and place it on the palm rest assembly 1 tabs 5 2 plastic scribe 3 keyboard 4 palm rest assembly 3 Liftthe latch and disconnect the keyboard cable from the system board 50 4 Lift the keyboard along with the cable off the palm rest assembly 1 latch 2 keyboard cable 3 keyboard 4 palm rest assembly 31 Replacing the keyboard A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedur
18. e instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Slide the power adapter port into the slot on the computer base Replace the screw that secures the power adapter port to the computer base 3 Route the power adapter port cable through the routing guides on the computer base Post requisites 1 Replace the display assembly N Follow the procedure from step 4 to step 8 in Replacing the system board Follow the procedure from step 4 to step 11 in Replacing the palm rest Replace the keyboard Replace the wireless card Replace the memory modules Follow the procedure from step 4 to step 6 in Replacing the hard drive Replace the base cover OANA HT RW Replace the battery 90 Removing the computer base A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 3 in 4 Remove the memory modules 5 Remove the wireless card 6 Remove t
19. e your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery 2 Remove the base cover Procedure 1 Disconnect the antenna cables from the wireless card 2 Remove the screw that secures the wireless card to the system board 26 3 Slide and lift the wireless card off the wireless card slot antenna cables 2 2 wireless card 3 screw 4 notch tab 6 wireless card slot 27 Replacing the wireless card A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure A CAUTION To avoid damaging the wireless card do not place any cables under it 1 Align the notch on the wireless card with the tab on the wireless card slot and slide the card into the slot 2 Pressthe other end of the wireless card and replace the screw that secures the wireless card to the system board 3 Connect the antenna cables to the wireless card Connectors on the wireless card Antenna cable color Main white triangl
20. eplace the base cover AN A U d Nx Replace the battery 59 Removing the thermal cooling assembly A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 3 in Removing the hard drive 4 Remove the memory modules 5 Remove the wireless card 6 Remove the keyboard 7 Follow the procedure from step 1 to step 8 in Removing the palm rest 8 Follow the procedure from step 1 to step 6 in Removing the system board Procedure 1 In sequential order as indicated on the thermal cooling assembly 60 loosen the captive screws that secure the thermal cooling assembly to the system board Disconnect the fan cable from the system board Lift the thermal cooling assembly off the system board system board thermal cooling assembly captive screws 4 Follow the procedure from step 1 to step 3 in Removing the fan 61 Replacing the thermal cooling assembly A WARNING Before working inside your computer read the safety information that shipped
21. eplacing the thermal cooling assembly 3 Turn the system board over 4 Align the screw hole on the system board with the screw hole on the computer base CAUTION Ensure that no cables are placed under the system board 5 Replace the screw that secures the system board to the computer base 6 Connect the power adapter port cable to the system board 7 Slide the display cable and l O board cable into the system board and press down on the latches to secure the cables 8 Adhere the tape that secures the display cable to the system board Post requisites 1 Follow the procedure from step 4 to step 11 in Replacing the palm rest 2 Replace the keyboard 3 Replace the wireless card 55 NOURA 56 Replace the memory modules Follow the procedure from step 4 to step 6 in Replacing the hard drive Replace the base cover Replace the battery Removing the coin cell battery A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance A CAUTION Removing the coin cell battery resets the BIOS settings to default It is recommended that you note the BIOS settings before removing the coin cell batte
22. ges and avoid touching pins and contacts gt gt D CAUTION You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team Damage due to servicing that is not authorized by Dell is not covered by your warranty See the safety instructions that shipped with the product or at dell com regulatory_compliance AN CAUTION Before touching anything inside your computer ground yourself by touching an unpainted metal surface such as the metal at the back of the computer While you work periodically touch an unpainted metal surface to dissipate static electricity which could harm internal components JN CAUTION When you disconnect a cable pull on its connector or on its pull tab not on the cable itself Some cables have connectors with locking tabs or thumb screws that you must disengage before disconnecting the cable When disconnecting cables keep them evenly aligned to avoid bending any connector pins When connecting cables ensure that the ports and connectors are correctly oriented and aligned A CAUTION To disconnect a network cable first unplug the cable from your computer and then unplug the cable from the network device CAUTION Press and eject any installed card from the media card reader Recommended tools The procedures in this document may require the following tools 11 Philips screwdriver e Plastic scribe 12 After working inside your computer
23. he keyboard 7 Follow the procedure from step 1 to step 8 in 8 Follow the procedure from step 1 to step 6 in board 9 Remove the display assembly 10 Follow the procedure from step 1 to step 3 i cooling assembly 11 Follow the procedure from step 1 to step 3 i gt gt 4 12 Follow the procedure from step 1 to step 3 i adapter port gt Procedure Removing the hard drive Removing the palm rest Removing the system Removing the thermal Removing the I O board Removing the power After removing all the parts in the prerequisites we are left with the computer base 91 1 92 computer base Replacing the computer base A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure Place the computer base on a clean and flat surface Post requisites 1 Follow the procedure from step 1 to step 3 in Replacing the power adapter port 2 Follow the procedure from step 1 to step 3 in Replacing the I O board 3 Follow the procedure from step 2 to step 4 in Replacing the the
24. ions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure Place the display back cover on a clean and flat surface Post requisites apWD HP 84 Replace the display hinges Replace the display bezel Replace the display panel Replace the display assembly Follow the procedure from step 4 to step 8 in Replacing the system board Follow the procedure from step 4 to step 11 in Replacing the palm rest Replace the keyboard Replace the wireless card Replace the memory modules Follow the procedure from step 4 to step 6 in Replacing the hard drive Replace the base cover Replace the battery Removing the camera A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 3 in Removing the hard drive 4 Remove the memory modules 5 Remove the wireless card 6 Remove the keyboard 7 Follow the procedure from step 1 to step 8 in Removing the pal
25. lay bezeL usssssss 72 Pr r qulsites E doe sre Leer cu DE dte eere e e ERE ERA SUR POPE e ee ems 72 Procedure sa Ra nere een ted eem er ES 72 Replacing the display bezeL sssuuss 74 Procedure iie sit tbt eva et e dett rt n tent ee ae e freta 74 Post TeQuiSitS ooooonicnnocncocononcoonconnnnnnonnnoonnnonnnonnconnnn EEEE EAEAN EEEE ee enne 74 Removing the display paNel oooooccononiccccnnccnonancnncncnncnnncnannnnnos 75 Prerrequisito ras 75 Proceder A ES 75 Replacing the display pANelLooccooncccinccccccccinacononcnnnnncnnncnnnnanonano 78 Ptoced rte eoa mae ete eheu te te See iy 78 P stsregqulsites ott t d uta espe 78 Removing the display hinges eese 79 Pr r Quisites its erede reium st cesta tase eerie IA Dan are 79 Procedure scettr eut eee te emet 79 Replacing the display hinges sues 81 Proced res com com teo ho E se De Pe et tete Bam ds 81 Postcredulsites adriana 81 Removing the display back cover 82 PREFEGUISILES Se uites a daa 82 Proced re o Rote et tm s he em e e eet ire d n eet 82 Replacing the display back cover 84 Proced te 5 ede p HE GNI HOCH A IRE 84 Post requisites s tr le ot nee 84 Removing the Camera ccsscccsccesseesseeeeseeeeseeeesseeseseeesseeesnees 85 P
26. liance Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 3 in Removing the hard drive 4 Remove the memory modules 5 Remove the wireless card 6 Remove the keyboard 7 Follow the procedure from step 1 to step 8 in Removing the palm rest 8 Follow the procedure from step 1 to step 6 in Removing the system board 9 Follow the procedure from step 1 to step 3 in Removing the thermal cooling assembly Procedure 1 Remove the screws that secure the fan to the thermal cooling assembly 65 2 Turn the thermal cooling assembly over 1 screws 4 2 fan 3 thermal cooling assembly 3 Liftthe fan off the thermal cooling assembly 1 fan 2 thermal cooling assembly 64 Replacing the fan A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Place the fan on the thermal cooling assembly 2 Turn the thermal cooling assembly over 3 Replace the screws that secure the fan to the thermal cooling assembly Post requisites 1 Follow the procedure from step 2 to step 4 in Replacing the thermal
27. lm rest assembly to the computer base 7 Slide the touch pad cable and the power button cable into the system board and press down on the latches to secure the cables 8 Close the display and turn the computer over 9 Replace the screws that secure the palm rest assembly to the computer base 10 Connect the speaker cable to the system board 11 Turn the computer over and open the display Post requisites 1 Replace the keyboard 2 Follow the procedure from step 4 to step 6 in Replacing the hard drive 3 Replace the base cover 4 Replace the battery 38 Removing the touch pad A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites Remove the battery Remove the base cover Follow the procedure from step 1 to step 3 in Removing the hard drive Remove the keyboard Follow the procedure from step 1 to step 8 in Removing the palm rest OU NA NP Procedure 1 Turn the palm rest assembly over and keep it on a clean and flat surface 2 Remove the screws that secure the touch pad bracket to the touch pad 39 3 Liftthe touch pad bracket off the palm rest assembly
28. m rest 8 Follow the procedure from step 1 to step 6 in Removing the system 9 10 board Remove the display assembly Remove the display bezel Procedure 1 Note the location of the camera and using a plastic scribe carefully pry the camera off the display back cover 85 2 Disconnect the camera cable from the camera and remove the camera from the display back cover 1 display back cover 2 camera plastic scribe 4 camera cable 86 Replacing the camera A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Connect the camera cable to the camera 2 Adhere the camera to the display back cover Post requisites 1 Replace the display bezel 2 Replace the display assembly Follow the procedure from step 4 to step 8 in Replacing the system board Follow the procedure from step 4 to step 11 in Replacing the palm rest Replace the keyboard Replace the wireless card Replace the memory modules Follow the procedure from step 4 to step 6 in Replacing the hard drive Oo AN A UH f Replace the base cover 10 Replace the battery 87 Removi
29. nd press down on the latch to secure the cable 3 Adhere the tape that secures the display cable to the display back cover 4 Turn the display panel over 5 Align the screw holes on the display panel with the screw holes on the display back cover 6 Replace the screws that secure the display panel to the display back cover Post requisites 1 Replace the display bezel 2 Replace the display assembly 3 Follow the procedure from step 4 to step 8 in Replacing the system board 4 Follow the procedure from step 4 to step 11 in Replacing the palm rest 5 Replace the keyboard 6 Replace the wireless card 7 Replace the memory modules 8 Follow the procedure from step 4 to step 6 in Replacing the hard drive 9 Replace the base cover 10 Replace the battery 78 Removing the display hinges A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 3 in Removing the hard drive 4 Remove the memory modules 5 Remove the wireless card 6 Remove the keyboard 7 Follow the procedure f
30. ng the power adapter port A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 3 in Removing the hard drive 4 Remove the memory modules 5 Remove the wireless card 6 Remove the keyboard 7 Follow the procedure from step 1 to step 8 in Removing the palm rest 8 Follow the procedure from step 1 to step 6 in Removing the system board 9 Remove the display assembly Procedure 1 Note the power adapter port cable routing and remove the cable from the routing guides on the computer base 2 Remove the screw that secures the power adapter port to the computer base 88 3 Lift the power adapter port along with the cable off the computer base 1 screw 2 power adapter port cable 5 routing guide 4 power adapter port 89 Replacing the power adapter port A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow th
31. omputer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites Remove the battery Remove the base cover Follow the procedure from step 1 to step 3 in Removing the hard drive Remove the keyboard Follow the procedure from step 1 to step 8 in Removing the palm rest OU NA NP Procedure 1 Liftthe latch and disconnect the I O board cable from the I O board 2 Remove the screw that secures the I O board to the computer base 49 3 Lift and slide the I O board from under the tab on the computer base 1 screw 2 I O board 3 latch 4 O board cable 5 tab 50 Replacing the I O board A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure Slide the I O board under the tab on the computer base and align the screw hole on the I O board with the screw hole on the computer base Replace the screw that secures the I O board to the computer base Slide the I O board cable into the I O board and press down on the latch to secure the cable Post requisites a BAN NP Follow the procedure from step 4
32. on and help on Dell products and services using these online self help resources Self Help Information Accessing Windows Help Information about Dell products and services Troubleshooting information user manuals setup instructions product specifications technical help blogs drivers software updates and so on Information about Microsoft Windows 8 1 Information about Microsoft Windows 7 Learn about your operating system setting up and using your computer data backup diagnostics and so on Contacting Dell Self Help Options Windows 8 1 Open the Search charm type Help and Support in the search box and press Enter Windows 7 Click Start Help and Support See dell com See dell com support See dell com windows8 Click Start All Programs Dell Help Documentation See Me and My Dell at dell com support manuals To contact Dell for sales technical support or customer service issues see dell com contactdell NOTE Availability varies by country and product and some services may not be available in your country 95 96 NOTE If you do not have an active internet connection you can find contact information on your purchase invoice packing slip bill or Dell product catalog
33. ory_compliance Procedure Slide the power button board under the tab on the palm rest assembly and align the screw hole on the power button board with the screw hole on the palm rest assembly 2 Replace the screw that secures the power button board to the palm rest assembly 3 Slide the power button board cable through the slot on the palm rest assembly 4 Turn the palm rest assembly over Post requisites 1 Follow the procedure from step 4 to step 11 in Replacing the palm rest 2 Replace the keyboard 3 Follow the procedure from step 4 to step 6 in Replacing the hard drive 4 Replace the base cover 5 Replace the battery 45 Removing the speakers A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites OU NA NP Remove the battery Remove the base cover Follow the procedure from step 1 to step 3 in Removing the hard drive Remove the keyboard Follow the procedure from step 1 to step 8 in Removing the palm rest Procedure 46 Turn the palm rest assembly over and place it on a clean and flat surface Note the location of the speakers and
34. pry the speakers off the palm rest assembly Note the speaker cable routing and remove the cable from the routing guides on the palm rest assembly 4 Lift the speakers along with the cable off the palm rest assembly 1 palm rest assembly 2 speaker cable 3 speakers 2 47 Replacing the speakers A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 3 Using the alignment posts adhere the speakers to the palm rest assembly Route the speaker cable through the routing guides on the palm rest assembly Turn the palm rest assembly over Post requisites a BAN NP 48 Follow the procedure from step 4 to step 11 in Replacing the palm rest Replace the keyboard Follow the procedure from step 4 to step 6 in Replacing the hard drive Replace the base cover Replace the battery Removing the I O board A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your c
35. r requisites ooh lll TR RETE ERREUR e dee 85 Proced re e aee ec eie e hee ehe rd 85 Replacing the Came rain cicccsciscisesasetasiatavantsvncitvesscsececoteicnsdecaase 87 Procedure ute cn tete ta oe e dett Pret eel oe etta 87 POSt TeQuiSiteS oooooonnnnnonicnicnocnocnccnconnar canon corno enne nnne 87 Removing the power adapter port 88 Prerrequisito titi 88 A A m tan at nace Puentes 88 Replacing the power adapter port 90 Procedure cio et ee ii recede it Hd 90 Postsregulsites ceo RT Rm utate 90 Removing the computer base esse 91 Prerequisit s tee on e tme E 91 Procedure oie mele ope etae ret e 91 Replacing the computer base esses 93 Procedure neoe denn O EROR ee EOD Pep 93 POSt Tequlsites recette itta tam tis 93 Flashing the BlO Soil 94 Getting help and contacting DelL 95 Self help resources cette a epp eee ay alli Contacting Dell Before working inside your computer A CAUTION To avoid damaging the components and cards handle them by their edges and avoid touching pins and contacts Es NOTE The images in this document may differ from your computer depending on the configuration you ordered Before you begin 1 Save and close all open files and exit all open applications 2 Shut down your computer Windows 8 1 On the Start
36. re working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 3 in Removing the hard drive 4 Remove the keyboard 5 Follow the procedure from step 1 to step 8 in Removing the palm rest Procedure 1 Turn the palm rest assembly over and place it on a clean and flat surface 2 Remove the power button board cable through the slot on the palm rest assembly Remove the screw that secures the power button board to the palm rest assembly 43 4 Slide and remove the power button board along with the cable from under the tab on the palm rest assembly 34 1 screw 2 power button board tab 4 power button board cable 44 Replacing the power button board A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulat
37. rmal cooling assembly 4 Follow the procedure from step 4 to step 8 in Replacing the system board 5 Follow the procedure from step 4 to step 11 in Replacing the palm rest 6 Replace the keyboard 7 Replace the wireless card 8 Replace the memory modules 9 Follow the procedure from step 4 to step 6 in Replacing the hard drive 10 Replace the base cover 11 Replace the battery 93 Flashing the BIOS You may need to flash update the BIOS when an update is available or when you replace the system board To flash the BIOS 1 2 3 94 Turn on the computer Go to dell com support Click Product Support enter the Service Tag of your laptop and click Submit NOTE If you do not have the Service Tag use the auto detect feature or manually browse for your computer model Click Drivers amp downloads Scroll down to Or show me all available drivers for and select BIOS from the Category drop down list NOTE In the Change OS drop down list select the operating system installed on your computer Expand BIOS to view the available BIOS files Click Download File to download the latest version of the BIOS for your computer Save the file and once the download is complete navigate to the folder where you saved the BIOS update file Double click the BIOS update file icon and follow the instructions on the screen Getting help and contacting Dell Self help resources You can get informati
38. rom step 1 to step 8 in Removing the palm rest 8 Follow the procedure from step 1 to step 6 in Removing the system board 9 Remove the display assembly 10 Remove the display bezel 11 Remove the display panel Procedure 1 Remove the screws that secure the display hinges to the display back cover 79 2 Liftthe display hinges off the display back cover 1 screws 6 2 display hinges 2 3 display back cover 80 Replacing the display hinges A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Align the screw holes on the display hinges with the screw holes on the display back cover 2 Replace the screws that secure the display hinges to the display back cover Post requisites Replace the display panel Replace the display bezel Replace the display assembly Follow the procedure from step 4 to step 8 in Replacing the system board hWDN BF Follow the procedure from step 4 to step 11 in Replacing the palm rest Replace the keyboard Replace the memory modules 5 6 7 Replace the wireless card 8 9 Follow the procedure from step 4
39. ry Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 5 in Removing the hard drive 4 Remove the memory modules 5 Remove the wireless card 6 Remove the keyboard 7 Follow the procedure from step 1 to step 8 in Removing the palm rest 8 Follow the procedure from step 1 to step 6 in Removing the system board Procedure Using a plastic scribe gently pry out the coin cell battery out of the battery socket 57 battery socket 2 coin cell battery 3 plastic scribe 4 system board 58 Replacing the coin cell battery A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure With the positive side facing up snap the coin cell battery into the battery socket on the system board Post requisites 1 Follow the procedure from step 3 to step 8 in Replacing the system board Follow the procedure from step 4 to step 11 in Replacing the palm rest Replace the keyboard Replace the wireless card Replace the memory modules Follow the procedure from step 4 to step 6 in Replacing the hard drive R
40. s 4 2 hard drive bracket 3 hard drive 4 interposer 20 Replacing the hard drive A A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance CAUTION Hard drives are fragile Exercise care when handling the hard drive Procedure 1 Connect the interposer to the hard drive 2 Align the screw holes on the hard drive bracket with the screw holes on the hard drive assembly 3 Replace the screws that secure the hard drive bracket to the hard drive assembly 4 Align the screw holes on the hard drive assembly with the screw holes on the computer base 5 Replace the screws that secure the hard drive assembly to the computer base 6 Slide the hard drive cable into the system board and press down on the latch to secure the cable Post requisites 1 Replace the base cover 2 Replace the battery 21 Removing the memory modules A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more s
41. screen click or tap the power icon o M Shut down Windows 7 Click or tap Start Shut down NOTE If you are using a different operating system see the documentation of your operating system for shut down instructions 3 Disconnect your computer and all attached devices from their electrical outlets 4 Disconnect all cables such as telephone cables network cables and so on from your computer 5 Disconnect all attached devices and peripherals such as keyboard mouse monitor and so on from your computer 6 Remove any media card and optical disc from your computer if applicable 7 After the computer is unplugged press and hold the power button for 5 seconds to ground the system board Safety instructions Use the following safety guidelines to protect your computer from potential damage and ensure your personal safety 10 A WARNING Before working inside your computer read the safety information that shipped with your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance A WARNING Disconnect all power sources before opening the computer cover or panels After you finish working inside the computer replace all covers panels and screws before connecting to the power source CAUTION To avoid damaging the computer ensure that the work surface is flat and clean CAUTION To avoid damaging the components and cards handle them by their ed
42. siera ete tet deti tig s 51 Removing the system board eee 52 Prer dulsitess cst EL D p O estu teet e des 52 Proced re oett Ree ee ten t tette d e et ice en s 52 Replacing the system board seseuss 55 Meses M LEEREN 55 POST FEQUISIT Seite t a taa d ardeat ne ER e pu 55 Removing the coin cell battery essss 57 Pi redquisites cm ose orn d mA E a en Life t dire oer iaa 57 A LE 57 Replacing the coin cell battery 59 Procedure iiti etu e e en i ont rete ed mte tet 59 Post r qulsites a ee de 59 Removing the thermal cooling assembyly 60 Prerrequisito pe p d err e EE s 60 Procedure docte ttes o eros UR A o es do ea ee 60 Replacing the thermal cooling assembly 62 Proced re aee a e es be e a ied eter od 62 Postsrequlisites ere obedece ena 62 Removing the fari id iei 63 Prerequisites o da tected de fae ele ttes dM arb urbt 63 Procedure cedere E e THER E TEE 65 Replacing the ainia ads 65 Procedure sesemon obit ale erect ee TO m mtus 65 POSt Tequlsites uc eee bate eau toate 65 Removing the display assembly 66 A A eM 66 A 66 Replacing the display assembly 71 POC ito dd asa 71 Postre quites iii RE dto dead edi a Need dis 71 Removing the disp
43. t 32 Removing the palm rest eese 33 Prerequisite So ikresen Tant motos leen aide ca or coa end 33 Procedure tea la S 33 Replacing the palm rest eese 358 A A de td n bt am bns 58 POSt Tequlsites eter ree md tte dta pa ede 58 Removing the touch pad eene 39 Pr r dulsites coo oor tel a ben th mtm mde es 59 Proced re siot re Reti e et tee s rete e e eet Pe d i e rdg 39 Replacing the touch pad eese 42 Proc ta E IS NEUE NON AR ERIS 42 Post requisitesa c te ERE D E dfi n aede ER UNES 42 Removing the power button board 43 PrerequisiteS aces o dece contio cerit desea is eie EO cet eto TE seas 43 A eR 43 Replacing the power button board 45 A E 45 Post regulsites cs aec cte pert pga de acted nube e US 45 Removing the speakers eeeeeereeeeeeeee 46 Preredquisites sectae eni pe on rU EUER 46 Procedure t oid o betur e om UR ce a co un 46 Replacing the speakers eese 48 Proced re c peer eb ehe eis 48 Postsrequisites ici ee tieu etat uta ehe 48 Removing the I O board sese 49 Pr r Quisites tt uere ao mier Poets ee 49 Procedures cese ec ee de P Ee 49 Replacing the I O board eese 51 Procedres nct eed got a ne 51 Postre qui
44. ter After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Procedure 1 Close the display and turn the computer over 2 Place the battery in the battery bay and snap the battery into place Es NOTE Ensure that the battery release latch is secured 15 Removing the base cover A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites Remove the battery Procedure 1 Remove the screws that secure the base cover to the computer base 2 Using your fingertips gently pry the base cover and remove it from the computer base 1 computer base 2 screws 2 base cover 16 Replacing the base cover A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at
45. to step 6 in Replacing the hard drive 10 Replace the base cover 11 Replace the battery 81 Removing the display back cover A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at dell com regulatory_compliance Prerequisites 1 Remove the battery 2 Remove the base cover 3 Follow the procedure from step 1 to step 3 in Removing the hard drive 4 Remove the memory modules 5 Remove the wireless card 6 Remove the keyboard 7 Follow the procedure from step 1 to step 8 in Removing the palm rest 8 Follow the procedure from step 1 to step 6 in Removing the system 9 10 11 12 board Remove the display bezel Remove the display assembly Remove the display panel Remove the display hinges Procedure After removing all the parts in the prerequisites we are left with the display back cover 82 1 display back cover 83 Replacing the display back cover A WARNING Before working inside your computer read the safety information that shipped with your computer and follow the steps in Before working inside your computer After working inside your computer follow the instruct
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