PC random freeze and random reboot

[zacht2011]

Ive had my pc since late 2014. Never had any issues with it until recently. It has begun to randomly freeze, and randomly reboot itself all the time. I could be doing anything from playing games, to watching youtube, to nothing and this will happen. I have a fresh install of Windows 10 64 bit Home edition that I did yesterday. All of the drivers are up to date. Windows is up to date. The BIOS is up to date. I have ran Memtest86 for 16 hours completing 6 passes with 0 issues. I have ran windows Check disk on my hard drives and they have found 0 issues.

PC Specs
Processor: Intel I7 5930k @ 3.5 GHz
Ram: G.SKILL Ripjaws 4 Series 16GB (4 x 4GB) 288-Pin DDR4 2800
Mobo: ASRock Fatal1ty X99X Killer LGA 2011
Graphics Card: 2 x EVGA GTX 980 Reference
Hard Drives: Primary: Samsung 840 Evo SSD (windows install drive), Secondary: WD Black 3TB 7200 RPM
Power Supply: EVGA SuperNOVA 1000W P2 Platinum

 

[Grobe]

You did not tell if the fresh installed Windows solved the problem or it still persists.

 

[zacht2011]

You did not tell if the fresh installed Windows solved the problem or it still persists.

No, the problems have continued. nothing has helped

 

[Grobe]

Can you say anything about aproximately time interval between those random reboots - are we talking minutes or weeks?

 

[zacht2011]

It will do a mixture of the freeze and reboot at least 10 times in 7 hours. Definitely not weeks.

 

[Grobe]

Is your CPU overclocked?

Have you performed any kind of modification on your setup before the problems started to occur ?