I have been running both versions of Windows 7 32 and 64bit without a problem on my computer. So today I install 4 more gigs of memory for a total of 8 and the desktop started in 800x600 and said that my ATI driver was not working. I had the ATI beta drivers from ATI installed. I tried all of the Windows supplied drivers and the only one to work is the 1st one Windows installs when you first install Windows 7. I have an ATI HD-2600-XT Video Card and AMD quad-core CPU. Anybody else have this issue? Any fixes? I also tried a fresh install of Win7 64bit and the same thing happens. I also tried a fresh install of Win7 64bit and the same thing happens.