So I have 5820k, 4x4gb corsair, rm650, corsair air 240 case, wibdows 10 64bit, gigabyte 7950, 4 screens connected to pc. I use this pc to trade on the market and there is no specific time when it restarts. It just happens... As you can see one restart was 2 weeks ago and another one happened 2 days ago twice. I have to fix it today otherwise i need new mobo.
I also realized that motherboard's display doesnt show cpu's temperature. I see "AA"