Hmm I wish my game would just crash or BSOD so I could at least see an error message, but the whole machine will restart, so I don't even get any useful log messages or crash dumps. I really don't want to start tearing my workstation apart piece by piece or reformat to resolve, but it seems like that is the only next step, as I can't see Square or Nvidia jumping in to help anytime soon.

I know all signs point to my hardware, but I need to stress that this only happens in this game, no other graphically intensive games, and all tests/stress tests pass no problem. 750 watt PSU with 62A on the +12 should be plenty....

Any final suggestions before I start blowing cash on replacement parts?