HP 280 G4 Maintenance And Service Manual page 76

Drive not found (identified).
Cause
Cable could be loose.
The system may not have automatically recognized a newly
installed device.
Drive responds slowly immediately after power-up.
CD-ROM or DVD devices are not detected or driver is not loaded.
Cause
Drive is not connected properly or not properly configured.
Movie will not play in the DVD drive.
Cause
Movie may be regionalized for a different country.
Decoder software is not installed.
Damaged media.
Movie rating locked out by parental lock.
Media installed upside down.
Cannot eject compact disc (tray-load unit).
Cause
Disc not properly seated in the drive.
CD-ROM, CD-RW, DVD-ROM, or DVD-R/RW drive cannot read a disc or takes too long to start.
Cause
Media is corrupt.
Media has been inserted upside down.
68 Chapter 6 Troubleshooting without diagnostics
Solution
Check cable connections.
See reconfiguration directions in the
problems on page 62 section. If the system still does not
recognize the new device, check to see if the device is listed within
Computer Setup. If it is listed, the probable cause is a driver
problem. If it is not listed, the probable cause is a hardware
problem.
If this is a newly installed drive, run the Computer Setup utility
and try adding a POST delay under Boot Options.
Run Computer Setup and increase the POST Delay in Boot
Options.
Solution
See the documentation that came with the optional device.
Solution
See the documentation that came with the DVD drive.
Install decoder software.
Replace media.
Use DVD software to remove parental lock.
Reinstall media.
Solution
Turn off the computer and insert a thin metal rod into the
emergency eject hole and push firmly. Slowly pull the tray out
from the drive until the tray is fully extended, then remove
the disc.
Solution
Try different media to confirm whether media is valid.
Re-insert the media with the label facing up.
Solving hardware installation