I have been having problems with my sapphire 7850's oc, These cards are factory overclocked and perform very well. When I am doing anything graphically intensive for over 30 minutes my computer freezes, I cant move the mouse change any of the profiles on my keyboard, the computer just becomes unresponsive. It normally does it when I am playing Battlefield 3
I have looked at the temp of the CPU and GPU when it freezes the CPU is around 35-40c and both GPU's ranges from 25-35c.
I am currently use the computer with no crossfire bridge and it runs the games fine with no crashing, One thing that i noticed is that the second GPU's fan does not spin just before the crash, its not just that it does not spin it just turns off. I cant see the any details about the card in CCC or any other program that I use.
I am using the 12.6 drivers currently, I have tried reinstalling the drivers, and i even formatted my SSD then reinstalled windows 7.
CPU - Intel i7 3820
GPU - 2x sapphire 7850 oc
Motherboard - Asus Rampage Formula IV
Ram - 4x 4GB G.Skill 1600mh/z DDR3
SSD - Intel 60GB 330 series Sata 2.0
HDD - WD Green 1.5TB Sata 1.0
PSU - Thermaltake tough power 775w modular
CPU Cooler - Corsair h60
Case - Coolermaster HAF 912
DVD Rom - 24x Cd/Dvd burner
OS - Windows 7 Ultimate 64x
Please help I rely on my computer for everything School/work/gaming/CAD/Other