HP EliteBook 8440P - The computer does not detect the optical drive

Removal and replacement procedures
Maintenance and Service Guide 4–21
4. If it is necessary to replace the optical drive bracket, follow these steps:
a. Position the optical drive with the rear toward you.
b. Remove the 3 Phillips PM2.0×4.0 screws 1 that secure the optical drive bracket to the optical drive.
c. Remove the optical drive bracket 2.
Reverse this procedure to reassemble and install an optical drive.