Steps
1.
NOTE: Removing the I/O board also removes the coin-cell battery which resets the CMOS settings.
Open the latch and disconnect the I/O board cable from the system board [1].
2. Peel the I/O-board cable from the palm rest and keyboard assembly [2].
3. Remove the two (M2x3) screws that secure the I/O board to the palm rest and keyboard assembly [1].
4. Lift the I/O board, along with the cable, off the palm rest and keyboard assembly [2].
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Removing and installing components