I recently purchased an AMD Athlon X4 860K.
Unfortunately after installing it, the PC constantly, and seemingly randomly, freezes and crashes, requiring a hard-restart in order to continue using the PC.
When I stick the old CPU back in, the problem vanishes. We have tried everything that has thus far been suggested.
We created an RMA with the people we bought it from and they say they stress tested it for 72 hours and it showed no faults at all. They then proceeded, obviously, to charge me a testing fee as well as a postage fee for their courier to return it to us.
After them deeming it fault-less, and sending it back, we re-installed it and low and behold the crashes continued happening.
Sometimes the PC runs for 15 minutes before crashing, and we managed to get it running for just under 8 hours at one point before it crashed.
The motherboard is a GA-F2A68HM-HD2 Rev. 1.1. The GPU is a GTX 560ti and we have a Corsair GS800 (800W) PSU installed so I doubt it's a lack of power.
Since we got it back, I have installed a fresh version of Windows 10, flashed the BIOS to the latest version, reset the CMOS by removing the motherboard battery for a good 10 minutes, updated the GPU drivers and even tried running it without them, turning off Windows updates after upgrading to the latest one and also tried running the PC with no drivers or software at all except for the chipset driver and Windows 10 of course.
I'm not sure if this is going to be something obvious that jumps out at somebody or if it's more convoluted and difficult to figure out, but I'd really appreciate any help you guys can give. I'm at a loss now and am sick of spending more money on this. They are obviously refusing to refund us since they found no faults with the CPU, so we're stuck with it and I guess I better get it working, or I'll keep hounding them until they either fix it or give me a refund.
Anyways, thank you for your time and I hope to find some help!