HP Compaq NX7300 Maintenance And Service Manual page 102

5. Loosen the Phillips PM2.5×13.0 spring-loaded hard drive
retention screw 1.
6. Grasp the mylar tab 2 on the left side of the hard drive and
slide the hard drive to the right 3 to disconnect it from the
system board.
7. Remove the hard drive 4 from the hard drive bay.
Removing the Hard Drive
Maintenance and Service Guide
Removal and Replacement Procedures
5–9