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I'm using Windows Vista, the latest build of PowerDVD Ultra 7.3, NVidia Go 8600M GT (DX10) GPU on my Dell Inspiron 1520 laptop with a Core 2 Duo (Santa Rosa) T7300 processor. I'm trying to play both a 1080i movie encoded in H.264 with 5.1 AC3 audio (in an mp4 container) and a 720p VC-1 encoded movie. Although I have purevideo enabled in PowerDVD settings, the moment I start one of these movies, the check box becomes unchecked and greyed out. The information tab says 'DX acceleration not in use'. However, purevideo works fine with standard DVD's. Since my configuration supports purevideo HD, and PowerDVD also shows the 'purevideo HD' icon on its main window, I should be able to accelerate H.264 and VC-1 as well! Please help me on how I can get this to work. I'm really confused. Thanks.
P.S. I have the latest drivers (169.21).
P.S. I have the latest drivers (169.21).