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

2. Remove the five slotted Torx T8M2.5×7.0 screws (1) (in the mass storage device bay) and the
five Phillips PM2.0×3.0 screws (2) (in the optical drive and battery bays) that secure the top
cover to the base enclosure.
3. Turn the computer right-side up, with the front toward you.
NOTE: Step 4 applies only to computer models equipped with a 15.6-in display assembly.
4. Remove the nine 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.
NOTE: Step 5 applies only to computer models equipped with a 14.0-in display assembly.
Component replacement procedures 121