I made a totally new PC:
SSD: Samsung Pro 840 120GB (Win7 64 bit - without updates)
VGA: Sapphire HD7850 2GB OC (Catalyst: 12.10)
MB: Asus M5A99X EVO R2.0 (BIOS 1201)
CPU: AMD FX-6300
PSU: Corsair GS600W 2013 Edition
RAM: Corsair DDR 1600Mhz
I use HDMI cable, i have stock options nearly everywhere.
When i play (Team Fortress2; CS:GO; FarCry3) i get frozen after 3-30min. Sound stucks, monitor don't receive signal. PC tries to auto-restart, but can't. My Mobo shows that there is some problem with the VGA (i get red led).
After I manually restart the system, everything is fine.
I tried to plug/unplug everything, latest drivers, other PCI-e cable, BIOS settings about voltages. Nothing changed it. I tried the card about an hour in my other PC there was no error.
Please help me find the source of the problem, and get rid of it!