HP dc7900 - Convertible Minitower PC Service & Reference Manual page 279

Table D-15 Solving CD-ROM and DVD Problems (continued)
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 has been inserted upside down.
The DVD-ROM drive takes longer to start because it has to
determine the type of media played, such as audio or video.
CD or DVD disc is dirty.
Windows does not detect the CD-ROM or DVD-ROM drive.
Recording or copying CDs is difficult or impossible.
Cause
Wrong or poor quality media type.
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
Re-insert the media with the label facing up.
Wait at least 30 seconds to let the DVD-ROM drive determine
the type of media being played. If the disc still does not start,
read the other solutions listed for this topic.
Clean CD or DVD with a CD cleaning kit, available from most
computer stores.
1. Use Device Manager to remove or uninstall the device.
2. Restart the computer and let Windows detect the CD or
DVD driver.
Solution
1. Try using a slower speed when recording.
2. Verify that you are using the correct media for the drive.
3. Try a different brand of media. Quality varies widely
between manufacturers.
Solving CD-ROM and DVD Problems 267