Power supply & Motherboard issue


I've ran into an issue that I'm trying to figure out what exactly it is. Here is my current setup.

Abit NF7-S Rev 2.0 (with Latest and last BIOS release - yeah old board)
AMD Barton 2500+ OC to 3200+
Corsair XMS PC-3200 --- 2 x 1GB dual channel
Ati X800 Pro
***COOLMAX CU-600B - http://www.newegg.com/Product/Product.aspx?Item=N82E16817159088

So when I started to play Team Fortress 2 and Warcraft 3: Frozen Throne after just a few minutes the screen went blank (black) as if the screen turned off and my HD light on the case goes solid. So I rebooted and went straight to the BIOS to find this....

Now, last night I changed the AGP voltage to 1.5 when before it was at 1.9v since I do overclock the card, played for a bit and everything was fine. I plan to play for 1-2hrs today to see if it hiccups again. I bought the power supply from NewEgg just 2 days ago, so I still have time to return it. Its a CoolMax CU-600B

I don't know much about power supply or voltages. Maybe someone can shed some light on this. What voltage does the video card and Hard drives run off 12v or 5v?
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More about power supply motherboard issue
  1. CoolMax PSUs aren't great. Return it for an Antec, Corsair, PC Power & Cooling, or OCZ.
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