System: Dell XPS600 3.0 Ghz Pent D / 2GB RAM / Dell installed Roxio MYDVD LE and Cineplayer / Window XP SP2

I recently had to replace my factory installed Nvidia 7900GS video card. (This is a stoy in itself. The card had been having wierd graphic corruption issues in video games and was getting worse all the time. Eventually it started having red and green pixel dots all over the screen when not playing games. When I took the factory card out to replace it, a capacitor just fell off the card when I barely touched it. Evidently it had never been soldered onto the card properly from the factory. I put the card back in without the capacitor and it still worked but still had the same issues. So I soldered the capacitor back on but it made no difference. Evidently the fact that it had not been connecting to the card properly from the beginning caused the card failure and it was not reversible.) I bought an 8600GTS to replace it. I had installed it and it seemed to be working great for weeks now. Then I tried to play a DVD. Every time the player would try to start the DVD I would get the dreaded Blue Screen of Death with reference to the file Nv4_disp.dll. It didnt matter if I used the Cineplayer or Mediaplayer, results were the same.

 

I did some research on the net for the issue and found lots of people were having this same error in games but could only find one who was having a DVD playing issue. None of the info I found had any solutions. I did find some reference to the newer card having some kind of hardware video enhancement called PureVideo and that it had conflicts with software DVD players. I could find no way to disable this on the video card.

I tried rolling back drivers etc, etc but was getting nowhere. Finally by pure accident I launched the Cineplayer software with no DVD in the Drive and looked at the DVD settings menu (Settings - DVD - Video) and there was a selection for Hardware Acceleration (DXVA). It was set to "Use if Available". Either my old 7900GS card had compatible hardware acceleration or it had none at all. I turned this option to off and was able to play DVD's once again. 

 

Thought I would pass this along to anyone having the same issue.