HP Compaq 516 Maintenance And Service Manual page 76

Removal and replacement procedures
3. Turn the computer right-side up with the front toward you.
4. Remove the two Phillips PM2.5×6.0 screws 1 and the Phillips PM2.0×4.0 screw 2 that secure the top cover to
the base enclosure.
5. Lift the rear edge 1 of the top cover until it rests at an angle.
6. Slide the top cover 2 back at an angle until the TouchPad cable 3 is accessible.
7. Disconnect the TouchPad cable from the system board.
8. Remove the top cover 4 by lifting it straight up.
Reverse this procedure to install the top cover.
Maintenance and Service Guide 4–33