Software issue most likely. Use UMPlayer
Just to confirmed on my HD 6970...
Connect to HDMI, DisplayPort I get BSOD at bootup...DVI works perfectly.
I assume they messed up the code...
Probably, because I am on HDMI. I think I should switch to DVI and try again.
11.6 is causing windows 7 x64 boot up BSOD here too.
AMD Phenom II X4 975 4.4Ghz
Sapphire HD 6970 2GB
G.SKill 4GB DDR3 1600Mhz