Lenovo ThinkCentre M77 1990 User Manual page 102

• Try a lower screen resolution or color depth.
If these actions do not correct the problem, run the diagnostic programs (see "Diagnostic programs" on
page 101 for instructions). If you need technical assistance, see Chapter 11 "Getting information, help, and
service" on page 105.
DVD movie will not play
Symptom: DVD movie will not play.
Actions:
• Make sure that the disc surface is clean and not scratched.
• Check the disc or package for regional coding. You might need to purchase a disc with coding for
the region where you are using your computer.
If these actions do not correct the problem, run the diagnostic programs (see "Diagnostic programs" on
page 101 for instructions). If you need technical assistance, see Chapter 11 "Getting information, help, and
service" on page 105.
No audio or intermittent audio while playing DVD movie
Symptom: No audio or intermittent audio while playing DVD movie.
Actions:
• Check the volume control settings on your computer and on your speakers.
• Make sure that the disc surface is clean and not scratched.
• Check all cable connections to and from the speakers.
• Use the DVD menu for the video to select a different audio track.
If these actions do not correct the problem, run the diagnostic programs (see "Diagnostic programs" on
page 101 for instructions). If you need technical assistance, see Chapter 11 "Getting information, help, and
service" on page 105.
Playback is very slow or choppy
Symptom: Playback is very slow or choppy.
Actions:
• Disable any background programs, such as AntiVirus or Desktop Themes.
• Ensure that video resolution is set to less than 1152 x 864.
If these actions do not correct the problem, run the diagnostic programs (see "Diagnostic programs" on
page 101 for instructions). If you need technical assistance, see Chapter 11 "Getting information, help, and
service" on page 105.
Invalid disc or no disc found message
Symptom: Invalid disc or no disc found message
Actions:
• Ensure that a DVD disc is in the drive with the shiny side of the disc facing down.
• Ensure that video resolution is set to less than 1152 x 864.
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ThinkCentre User Guide