• “Black screen instead of DVD video” on page 96• “DVD movie will not play” on page 96• “No audio or intermittent audio while playing DVD movie” on page 96• “Playback is very slow or choppy” on page 96• “Invalid disc or no disc found message” on page 97Black screen instead of DVD videoSymptom: Black screen instead of DVD videoActions:• Restart the DVD player program.• Close any open files, turn off the computer, and then restart the computer.• Try a lower screen resolution or color depth.If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” onpage 109 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, andservice” on page 111.DVD movie will not playSymptom: 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 forthe region where you are using your computer.If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” onpage 109 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, andservice” on page 111.No audio or intermittent audio while playing DVD movieSymptom: 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” onpage 109 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, andservice” on page 111.Playback is very slow or choppySymptom: Playback is very slow or choppy.Actions:• Disable any background programs, such as AntiVirus or Desktop Themes.96 ThinkCentre User Guide