HP ProBook 6455b, 6555b, 6450b and 6550b Notebook PCs Maintenance and Service Guide

5. Remove the six slotted Torx T8M2.5×7.0 screws (1) and the two slotted Torx T8M2.5×11.0
screws (2) that secure the top cover to the base enclosure.
6. Lift the rear edge (1) of the top cover until it detaches from the base enclosure.
7. Remove the top cover (2) by lifting it straight up.
Reverse this procedure to install the top cover.
122 Chapter 4 Removal and replacement procedures