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zt1100/xz200 and xt1500 Series Troubleshooting and Diagnostics 17
Troubleshooting and Self-Repair Guide
CD and DVD Problems
If you can’t boot from a CD in the CD/DVD drive
• Make sure the CD is bootable, such as a Recovery CD.
• Make sure the CD-ROM/DVD drive is selected as the boot device—see “Changing the Boot
Device” on page 13.
• Restart the notebook.
• Test the CD/DVD drive with the e-Diagtools diagnostics— see “Using the e-Diagtools Diagnostic
Tests” on page 33.
If a CD or DVD plays erratically
• Dirt or smudges can cause a disk to skip. Clean the disk with a soft cloth. If the disk is badly
scratched, it may have to be replaced.
• Some DVDs include software called “PC Friendly.” You generally should not install this
software, as it can cause errors or erratic play. If needed, uninstall it and restart the notebook.
If a DVD movie stops playing in the middle
• You may have accidentally paused the DVD movie. Press the Play button to resume.
• The DVD may be double-sided. Open the DVD tray, and read the text near the center of the disk.
If it says Side A, flip the disk over, close the tray, and press the Play button to continue playing
the movie.
If you get a Region Code error when playing a DVD movie
• DVDs have regional codes embedded in their disk data. These codes prevent DVD movies from
being played outside the region of the world in which they are sold. If you get a Region Code
error, you are trying to play a DVD intended for a different region.
Important: Most DVD drives let you change the region code only a limited number of times
(usually no more than four) to allow you to set the proper region code for your area. Please note
that when you reach this limit, your last change to the region code will be hard-coded on the DVD
drive, and will be permanent. The HP warranty does not cover the expense of correcting this
situation.
Refer to the help for the DVD player software for details about setting region codes.
If the notebook cannot read a CD or DVD
• For a single-sided CD or DVD, make sure the disk is placed in the drive with the label facing up.
• Clean the disk with a soft cloth.
• Wait 5 to 10 seconds after closing the tray for the notebook to recognize the disk.
• Remove the disk from the drive, then restart the notebook.
• If you created the CD on a CD-RW drive, try using a different media brand. For best results use
HP certified media. While other media may work, HP cannot guarantee compatibility.