Weird loss of video signal and reboots

All of a sudden today my PC started to lose its video signal, then reboot at random. Its even doing this while I am in the bios settings, and when windows is loading. Sometimes right away, sometimes I can use my PC for hours.

Anyone have any idea whats going on? One time I got a "Windows recovered from a serious error" but before I could get the error code it crashed. (**EDIT FINALLY GOT A SCREEN SHOT**) I have been using this computer without a problem for more then a year. No changes were made today to the hardware or software.

CPU Temp is running around 40'C, intel duo 2.

Thanks

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http://i33.tinypic.com/33ojk8i.jpg

PSU? Wattage? Amps? Memtest each stick of memory separately.

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Originally Posted by Mark

All of a sudden today my PC started to lose its video signal, then reboot at random. Its even doing this while I am in the bios settings, and when windows is loading. Sometimes right away, sometimes I can use my PC for hours.

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My initial suspicion would be the VRAM. You have two 8800's in SLI, right? Try pulling one and see if you stabilize. If not, swap cards.