HP HDX 16 Maintenance And Service Manual page 79

Remove the TouchPad on/off button board:
1. Turn the top cover upside down, with the front toward you.
2. Remove the Phillips PM2.0×4.0 screw 1 that secures the TouchPad on/off button board to the top cover.
3. Remove the TouchPad on/off button board 2 and cable.
Reverse this procedure to install the TouchPad on/off button board.
Removal and replacement procedures 4–44