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Audio CD does not produce sound
■ Make sure that the disc label is facing up, then try again.
■ Some music CDs have copy protection software. You may not be able to play these
CDs on your computer.
■ Make sure that the volume controls are turned up. For more information, see
“Adjusting the volume” on page 32.
■ Make sure that the mute controls are turned off. For more information, see “Adjusting
the volume” on page 32.
■ Make sure that the speaker cables are connected correctly and securely.
■ Shut down and restart your computer.
■ Clean the disc. For more information, see “Cleaning CDs or DVDs” on page 52.
■ Reinstall the audio device drivers.
A DVD movie will not play
■ Make sure that you have a DVD drive. To identify your drive type, see “Identifying
drive types” on page 41.
■ Make sure that the disc label is facing up, then try again.
■ Try a different disc. Occasionally discs are flawed or become scratched and cannot be
read by the DVD drive.
■ Shut down and restart your computer.
■ Clean the disc. For more information, see “Cleaning CDs or DVDs” on page 52.
■ Reinstall the device driver.
■ Make sure that the DVD program has been installed on your computer.
■ DVDs and DVD drives contain regional codes that help control DVD title exports and
help reduce illegal disc distribution. To be able to play a DVD, the disc’s regional code
and your DVD drive’s regional code must match.
The regional code on your DVD drive is determined by your computer’s delivery
address. The regional code for the United States and Canada is 1. The regional code
for Mexico is 4. Your DVD drive’s regional code must match the regional code for the
disc. The regional code for the disc is on the disc, disc documentation, or disc
packaging.
If the DVD movie does not play, the disc’s regional code and your DVD drive’s regional
code may not match.