Just installed Windows 7 (64-bit) and subsequently the newest catalyst control center and drivers for my 4850. I've attempted to auto-tune and to adjust the clock speeds manually to no avail. The screen will say "testing" and never change. I've worked with Catalyst before and know that it only takes a couple of seconds for a test to pass or fail. Any suggestions? Thank you.
More aboutradeon 4850 problem catalyst
a while back they changed that the screen will hold the test a while longer, and for auto tune it takes ages... i hvnt used overdrive since then, because after each try i get a brown screen...