After fooling around with Vista, I decided to try my luck with Windows 7 beta…and no surprises here, it’s just Vista with a cleaned up act. Unfortunately the same error occurring in Vista (Nvlddmkm stopped responding) is still present in Windows 7. I finally had to suck it up and down-clocked my rig back to stock settings, at which point, Windows 7 happily obliged and behaved itself. What a bummer!