Replacing the system board
NOTE: 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 www.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 appropriate changes again after you replace the system board.
Topics:
• Procedure
• Post-requisites
• Entering the Service Tag in the BIOS setup program
Procedure
1. Align the screw holes on the system board with the screw holes on the palm-rest assembly.
2. Replace the four screws (M2x2 Big Head) that secure the system board to the palm-rest assembly.
3. Align the screw holes on the USB Type-C bracket with the screw holes on the system board and the palm-rest assembly.
4. Replace the two screws (M2x3) that secure the USB Type-C bracket to the system board and the palm-rest assembly.
5. Align the screw holes on the graphics daughter-board brackets with the screw holes on the graphics daughter-board and the
system board.
6. Replace the four screws (M2x3) that secure the graphics daughter-board brackets to the graphics daughter-board and the
system board.
7. Slide the status-light board cable, keyboard cable, keyboard backlight-cable, and touch pad cable in to their respective
connectors on the system board and close the latch to secure the cable.
8. Connect the speaker cable to the system board.
9. Connect the power-adapter port cable to the system board.
10. Connect the hard-drive cable to the system board.
11. Connect the I/O-board cable to the system board and close the latch to secure the cable.
12. Adhere the tape that secures the I/O-board cable to the system board.
13. Slide the display cable and the touch-screen board cable into their respective connectors on the system board and close the
latches to secure the cables.
14. Adhere the tapes that secure the display cable and touch-screen board cable to their respective connectors on the system
board.
Post-requisites
1. Replace the solid-state drive/Intel Optane memory module.
2. Replace the heat sink.
3. Replace the memory modules.
4. Replace the battery.
5. Replace the base cover.
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Replacing the system board 65
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