Arrrgh Catalyst drivers on 5870

Finally got my new machine built (in sig) and Windows 7 installed without issue. However as soon as I installed the Catalyst drivers (latest from ATI site 8.66 RC6) windows boots and the monitor goes straight into Power Save mode as if the frequency is too high or something. I can boot into safe mode with no problems.

Am going to try removing the drivers in Safe mode and reinstall them, see if that helps. I already tried installing the RC7 version but Catalyst installer needs to be able to detect the hardware, unlike the nvidia drivers, so they wont install in safe mode. I expect I will reinstall windows tonight and try again if uninstalling doesn't work.

Any other ideas? Anyone else had issues like this?

Thanks guys n gals.

I naver had this issue using a DVI cable, how are you hooking up to the monitor ?

I have both monitors hooked up by DVI.