HP ProBook 450 G1 Maintenance And Service Manual page 52

To remove a hard drive:
1. Position the computer upside down on a flat surface.
2. Remove the 4 Phillips PM2.5×3.0 screws that secure the hard drive to the chassis.
3. Pull the hard drive tab (1) toward the side of the computer to disconnect the hard drive.
4. Lift the hard drive (2) out of the hard drive bay.
40 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts