HP Compaq Presario,Presario C300 Maintenance And Service Manual page 113

3. Remove the Phillips PM2.5×5.0 screw 1 that secures the
optical drive to the computer.
4. Insert a thin tool into the notch 2 on the back of the optical
drive and push to disconnect the optical drive from the
system board.
5. Remove the optical drive 3.
Removing the Optical Drive
Maintenance and Service Guide
Removal and Replacement Procedures
5–19