What steps are required to replace the hard drive in my HP ProBook 640 G2 notebook?

To remove the hard drive: 1. Shut down the computer and disconnect all devices and power. 2. Remove service door, battery, and solid-state drive (if applicable). 3. Loosen or remove 4 P1 screws securing the hard drive. Pull plastic tab to release hard drive from slot for removal. For disassembly of the drive: 4. Remove additional screws holding the top cover on. Lift off the top cover to access internal components inside the drive. (Page 39)