HP Compaq NX4820 Maintenance And Service Manual page 135

Removal and Replacement Procedures
4. Turn the computer display-side up with the front panel
toward you.
5. Open the computer as far as possible.
6. Insert a flat-blade screwdriver under the outside edges of
the display hinge covers.
7. Lift up on the outside edges of the hinge covers 1 until the
switch cover 2 disengages from the computer.
Releasing the Switch Cover, HP Pavilion dv1400 Models Only
5–22 Maintenance and Service Guide