HP ProBook 6545b Maintenance And Service Manual page 134

Removal and replacement procedures
Remove the top cover:
1. Turn the computer upside down, with the front toward you.
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.
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Step 4 applies only to HP Compaq 6545b and 6540b computer models.
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.
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