PC turns off with no BSOD.

[Dawson Base]

Dude, you are running a 4+1 Phase mobo.
Go into the bios and underclock your 8350 or even better, make it into a 4-core. Or even a 2 core. See if the problem persists.

EDIT: Look into a mobo running off a 990FX chipset if you are running a FX-8350. Something with a 6+2 or a 8+2 power. Because chances are you have blown your VRMs and now it shuts down upon applying any sort of stress to the system.

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Project shelved. Refer to this thread for further details.