Hmm...so you say that this happens only on one DVD?
If other movies/DVD's work, then I would suspect this to be a CODEC or VIdeo player issue. To check the CODECs, try using a CODEC identifier utility. They are free. You can download one from here:
http://www.videohelp.com/tools?s=38#38There are multiple CODEC identifier programs on the page I just gave you, but I would either use AVICodec or GSpot (they are the best ones in my opinion).
Once you have downloaded And Installed one of the CODEC Identifiers, run it and then open the movie The CODEC indentifier will tell you which Audio CODECs and Video CODECs are needed. Then go into Device Manager, then expand the sound, video and audio controllers and then go into the Audio Codecs and check to make sure you have the needed audio Codec, then do the same for the Video Codec.
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If that doesn't work, it could be a Video player issue. Which Video player are you using? Try getting another player, from here:
http://www.videohelp.com/tools?s=11#11and then try opening the movie.
See if that works, Don.