HP nw9440 Maintenance And Service Manual page 164

Removal and Replacement Procedures
3. Remove the fourteen Torx8 T8M2.5×9.0 screws that secure
the top cover to the computer.
Removing the Top Cover Screws, Part 1
4. Turn the computer right-side up with the front toward you.
5. Remove the two Torx8 T8M2.5×7.0 screws that secure the
top cover to the computer.
Removing the Top Cover Screws, Part 2
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