BSOD under stress

Hello,

I am currently not on the problem computer as i am at work. I recently got my computer, opened it up when recieved to make sure everything was snug and connected. It was running like a dream, then it froze. I was a computer tech for a while so I knew to run through updating everything. I updated every driver you could think of, DirectX, framework, forceware, memtest'd the RAM, chipset drivers, etc. I think ive come to the conclusion that the VGA is overheating. It idles at 60C with the fan at 80%. When I play less graphic intensive games like Counter-Strike: Source, it runs fine. However, games like Timeshift & Crysis freeze over time. Will installing a VGA cooler fix my problem?

Thanks


Power Supply
( 750 Watt -- Thermaltake Toughpower W0117RU Power Supply Quad SLI Ready )

Processor
( [=== Quad Core ===] Intel Core 2 Quad Processor Q6600 (4x 2.4GHz/8MB L2 Cache/1066FSB) )

Motherboard
( eVGA NForce 680i SLI Chipset w/7.1 Sound, Gb LAN, S-ATA Raid, USB 2.0 Dual PCI-E MB )

Memory
( 2048MB [1024MB X2] DDR2-800 PC6400 Memory Module Mushkin )

Video Card
( NVIDIA GeForce 8800GTX 768MB w/DVI + TV Out Video )