Really frustrating problem...

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Bobbehh

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Jan 17, 2011
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My setup:
Biostar T790GX XE mobo
2x2GB OCZ Reaper pc2-8500 DDR2 RAM
AMD Athlon II x3 440 @ stock 3.0GHz
Visiontek radeon HD 5670 graphics card
160GB HDD w/ Windows 7 64-bit
750GB HDD
Rosewill 700-watt power supply

This computer ran without a hitch for several months. Played Bad Company 2 on maxed settings no problem, multiple other games, video editing, etc. A while ago, while simply browsing the web, it flashed to a black screen. Fans kept going as fast as they were before, monitor turns off ("no signal"). It then reboots after sitting for a few minutes. Ever since it's done the same thing about 2-3 minutes after I log into my desktop.

Assuming it was a power supply failure, I picked up a 750 watt power supply from Tiger Direct (Ultra X4 modular psu). I've swapped the two power supplies back and forth several times, but this one won't boot my computer at all. Nothing but a faint beep/click noise happens when I press the power button.

Safe mode will hardly boot as well as normal Windows.

I've tried resetting the cmos jumper or whatever you call it. No dice. I've ruled out it being the graphics card. I don't know what to try next. Is my newer power supply just dead on arrival? Should I pick up a new motherboard? Thanks in advance for any help I can get.
 
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