HP Compaq Presario,Presario R4000 Maintenance And Service Manual page 105

2. Remove the PM2.0×7.0 screw 1 that secures the optical
drive to the notebook.
3. Insert a thin tool, such as a paper clip, into the media tray
release hole 2. The optical drive media tray releases from the
optical drive.
4. Use the media tray frame to slide the optical drive 3 to the
right.
5. Remove the optical drive.
Removing the Optical Drive
Reverse the above procedure to install the optical drive.
Maintenance and Service Guide
Removal and Replacement Procedures
5–15