Thanks Derinahon and TonyD, tried your suggestions but no luck.
Just some background, I had an ATI R5870 1GB which worked ok albeit slow in CLoD. I removed R5870 AND ATI ccc drivers, installed new R6970 installed latest ATI drivers (11.5b) and I have the problem with black screen. I can hear game running and throttle changes etc, but black screen???
Full system spec is:
CPU: Intel i7 960 3.2 GHz (stock)
memory: 6 GB (3 X 2GB) DDR3 1333 (running at stock)
gpu: 6970 2GB @ 940 / 1375
mb: ASUS Rampage III Extreme
os: Windows 7 Ultimate 64
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