Monitor keeps shutting off in crisis 2 and its set to never sleep

My Complete System

1- Microsoft Windows 7 Professional 64Bit DVD OEM
1- Cooler Master HAF 932 Full Tower Black Case
1 -ASUS Rampage III Gene Intel X58 mATX LGA1366 Motherboard
1- Intel Core i7-950 3.06Ghz 8M LGA1366 CPU
1- ULTRA CHILLTEC AM2/775/I7 CPU COOLER
3 - 230mm fans with porcelain ballbearings
3 - 120mm fans with porcelain ballbearings
2 - Dual EVGA GeForce GTX 460 FTW 1GB (2GB total) Edition GDDR5 PCIe
4 - Quad Corsair 2GB DDR3 PC12800 1600MHz (8GB total) Class 9
1 - WD Caviar Black 1TB SATA HD 7200/64MB/SATA-6G
2 - WD Caviar 500GB Serial ATA HD 7200/32MB/SATA-3G
1 - WD Elements SE Portable 750GB USB 2.0 External HD
1- Kingwin LAZER 750w Power Supply 80plus
1- Lite ON 24X DVDRW SATA w/Lightscribe
1- Sony 12X Blu Ray Burner OEM
1 - Ultra USB 2.0 MD3 5.25" Multi Function Panel Blk
1 - Logitech Cordless Desktop Wave Pro
1 - Trendware 300Mbps Wireless N-Draft PCI Adapters
2 - Dual Viewsonic VX2739wm 27" Wide LCD Monitor W/Spkrs


Hey guys,
Heres the deal..... My monitor keeps turning off and sometimes my system locks up and I have to force close or even restart the system during Brink or Crisis 2. COD, Medal of Honor etc work just fine. I thought it was my monitor but viewsonic just replaced it free and its still doing it. I brought the tower to a computer shop and they said the computer is a smokinng machine with no issues. I lost $99 because they didn't fix crap and claimed they never had that problem with the games. I juust set my monitor to never turn off and that didnt work either. It runs consistently at 23C. I have dual graphics cards with digital cpu readouts on the front and it seems to never go over 23C. I dont know what the deal is but man oh man is it frustrating! I only get 2-3 minutes of game play. Anyone know a fix?