HP Compaq NX7300 Maintenance And Service Manual page 138

4. Turn the computer right-side up with the front toward you.
5. Disconnect the speaker cable 1 from the system board.
6. Remove the four Torx8 T8M2.5×4.0 screws 2 that secure the
top cover to the computer. Note that the defeatured model
requires removal of three torx screws to remove the top
cover, and does not include the left-most torx screw.
Removing the Top Cover Screws, Part 2 (full-featured model
shown)
Maintenance and Service Guide
Removal and Replacement Procedures
5–45