HP COMPAQ NC2400 Maintenance And Service Manual page 121

Removal and Replacement Procedures
3. Turn the computer display-side up with the front toward you.
4. Open the computer as far as it will open.
5. Lift the left and right hinge cover sections of the switch cover
to disengage the switch cover from the computer.
Releasing the Switch Cover, Part 2
Maintenance and Service Guide 5–29