My second display works find most of the time, I can play movies on it, etc. However, when I try to play movies on it via Theater mode they appear corrupt. This does not happen when playing them "normally" using clone or extended desktop modes (even full screen).

I've tried everything I can think of (updating drivers, Catalyst Control Center, resetting to factory defaults...) I running XP (media center edition).
Any suggestions?

Thanks,
Brian.

Thats kinda of a small card for Theater mode IMO.

Should have said originally - had this working fine before, perfect video on my TV (my second display) through an HDMI hookup.

Not sure what happened to break it, I did reinstall the drivers at one point to fix some driver corruption due to a crash.

Any ideas appreciated,
Brian.

Sounds like the memory got overheated on the card and is now damaged