HP Compaq Presario,Presario F500 Maintenance And Service Manual page 58

Remove the following screws and standoffs:
3.
(1) Three Phillips PM2.5×4.0 screws
(2) Six Phillips PM2.5×5.0 screws
(3) Two Hex HM5.0×7.0 standoffs
Turn the computer right-side up, with the front toward you.
4.
Release and disconnect the following ZIF cables from the system board:
5.
(1) Power button board cable
(2) TouchPad cable
50 Chapter 4 Removal and replacement procedures