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.
NOTE: Before disconnecting the cables from the system board, note the location of the connectors so that you can
reconnect the cables correctly after you replace the system board.
Prerequisites
1. Remove the base cover.
2. Remove the battery.
3. Remove the memory modules.
4. Remove the wireless card.
5. Remove the solid-state drive/Intel Optane.
6. Remove the fan.
7. Remove the heat sink.
8. Remove the display assembly.
Procedure
1. Disconnect the power-adapter port cable from the system board.
2. Disconnect the speaker cable from the system board.
3. Open the latch and disconnect the keyboard cable from the system board.
4. Open the latch and disconnect the keyboard back-light cable from the system board.
5. Open the latch and disconnect the touchpad cable from the system board.
6. Open the latch and disconnect the hard-drive cable from the system board.
7. Open the latch and disconnect the I/O-board cable from the system board.
8. Open the latch and disconnect the fingerprint-reader cable from the system board.
NOTE:
This step is applicable only for computers shipped with the optional fingerprint reader.
9. Open the latch and disconnect the power-button board cable from the system board.
Removing and installing components
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