HP Compaq Presario,Presario V4000 Maintenance And Service Manual page 156

Removal and Replacement Procedures
4. Turn the computer right side up with the front toward you.
5. Release the ZIF connector 1 to which the TouchPad cable is
attached and disconnect the cable 2 from the system board.
6. Remove the three Phillips PM2.5×7.0 screws 3 that secure
the top cover to the base enclosure.
Removing the Top Cover Screws, Part 2,
HP Pavilion dv4000 Models
5–52 Maintenance and Service Guide