Question System fails to POST (sort of) ?

[Nkade]

My pc powered off randomly the other day and had some troubles starting back up. Today it restarted, then shut down and now won't POST, the motherboard was showing a gpu error code, but showed a power short error when I removed the card.

I've been over the case and motherboard multiple times without seeing anything to cause this. I've checked on every piece of hardware, every cable, and every screw, tried switching bios, reset cmos, and went over every usb device, and port, only to come up with nothing.

I'm fairly sure the culprit is the power supply, graphics card, or possibly the motherboard, but can't at all figure out what one, unless everything went at once. It did load to desktop once, but failed shortly after.

 

[rgd1101]

full system spec? include brand and model of the psu

 

[Nkade]

Gigabyte motherboard
2x 8gb ddr4 ram Hyperx
Intel i3 or 5 3.3ghz, overclocked to 4.2ghz
Nvidia gtx 1070 FE
EVGA supernova 850 watt G2
Running Windows 10

All antivirus and malware scans prior to this only came up with tracking cookies and old registry entries. I scanned with Hitman Pro and Malwarebytes.

Forgot to mention that everything was running cool at the time of the last crashes.

 

[Nkade]

After a lot more tinkering post keeps bringing up pch pei initialization.