My computer has an ATI Radeon 4770 with version 10.1 of AMD's Catalyst driver. I'm running 64-bit Windows 7 Enterprise Edition (the final release, build 7600). For some reason when I watch a movie DVD with Windows Media Player in full screen mode I keep getting an intermittent blank screen. It's not a gray screen, just a blank one. When this happens DVD playback stops and I have to hit ESC to exit full screen mode before I can see anything. This problem only happens when watching movie DVD's in full screen mode. It does not happen when gaming or web browsing. Is this a issue specific to the Catalyst 10.1 driver? Is there some way to fix this without downgrading my graphics driver? I don't want to downgrade my driver because the Sims 3 has severe graphics corruption with previous Catalyst driver versions.