Originally Posted by MainStageNews
And its not BSOD'ing it just shuts off no warning at all then turns back on.
Just double-checking, you have automatic restart after crash turned off I assume? It's on by default when you install Win7. Control Panel > Advanced system settings (system properties) > advanced tab > startup and recovery "settings" button > in the system failure section clear the checkbox labeled "automatically restart".
You can also check the event logs for crashes or other critical events. One of my favorite ways to do this is with the reliability monitor since it has a nice timeline display. Open up the Run dialog and enter "perfmon /rel" and look for red x events.
Originally Posted by wermad
That psu is perfectly fine for one 7970.
Go back to stock clocks on everything, reset your bios (clear cmos).
Agreed on both counts, especially that the first step should be go back to default speeds and voltages on everything. IMO by the symptomology it sounds power- or heat-related so that's where I'd focus my investigation.
FWIW, I think I have the same PSU (x-series?) and it's a solid unit. Seasonics have a little overhead above their rating, but if you are overclocking the card AND your CPU then it's possible that pushes it close to the max.
If going back to stock speeds doesn't change anything then check your board for blown caps. After that the fruit isn't quite so low-hanging so I'd do a tear-down and rebuild it piece by piece, swapping in other parts if you have them available.
One more question though... you were using the exact same hardware with the exact same overclock on air, and everything was fine?