Now I've done it... I upgraded a prefectly working MCE 2k3 machine to MCE 2k5 (discs from MSDN Subscribers Download), and now I'm horked. Well, kinda horked...
I flattened/paved the box, and did a clean install. I updated my nVidia GeForce3 drivers to the 10/15/2004 drivers. I purchased the NVidia MPEG decoder. I tested this setup w/ WMP10, and DVD playback is fine.
When I start Media Center, it lets me choose "Live TV", then the little spinning arrow goes for a bit, and freezes. The TV screen is black, and there is audio coming from the proper tv station. I can change the channel, and the audio changes fine, and there is no video.
Same for DVD. I click on Play DVD... The UI still shows the scrolling menus, and is frozen. Once again, the audio is playing fine.
I'm sure I dorked up one of the various video drivers, and I can't tell which one needs to be fixed... Anyone have any ideas?