Comment # 7 on bug 71067 from Alex Deucher

(In reply to comment #6)
> Created attachment 88581 [details]
> dmesg log - boot then freeze at random
> 
> I managed to boot another time with modesetting enabled, but it quickly
> froze.
> 
> So far, every single new attempts to boot in Windows 7 have failed with a
> BSOD .
> 
> What's your take on this? Could it be hardware failure?

Could be.  Does powering down completely between booting different OSes help?