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#11
Ok, this happens only on a cold boot. Again unless PSU has an issue now or recently had added more hardware then might say not enough wattage, but had same hardware for months. So if the PSU there is another issue with it then this. Sure applied thermal paste correctly ? Since do not have integrated graphics be kind of hard to test if it is the card unless you had another graphics card, said something about a dead one tho. When PC does stay on i would use HWMonitor look at the temps and voltage of the PSU, can post a screen capture of it.
To the left is the free version http://www.cpuid.com/softwares/hwmonitor.html