I am having problems playing any DVD on my Pioneer DVD-R drive. I have instealled PowerDVD, WinDVD, and NVDVD all with the same result. The drive recognizes the disc as a DVD, the player opens... I get audio but no video. This is with any DVD, copied or original. I'm not sure if there is something wrong with the drive or possibly my video card? Any help would be greatly appreciated. If you need any further information let me know. Thanks!