PC just keeps rebooting. no video.

I need some help. So my PC when i turn it on appears to start up, all the leds, fans, heatsink light up and it starts to boot up, then after like 5 seconds it turns itself off. It then restarts itself, after 5 seconds turns off etc, and just keeps doing this. I get no video image. I can't enter the BIOS. I've tried unplugging, letting everything cool down etc. Tried by passing the GPU and going in the onboard video. nothings worked so far.

Here's a vid of the situation:
http://www.youtube.com/watch?v=8XDI5mruoWA

Anybody know what the problem is? My PC parts are still basically brand new (actually 2 years old), I havent used it much at all. It's clean inside, no dust, it used to work fine.
4 answers Last reply
More about rebooting video
  1. Try booting with one RAM stick at a time. One of them went bad.
  2. crewton said:
    Try booting with one RAM stick at a time. One of them went bad.


    Hey, Tried it, didn't work. Took one RAM stick out, tried, put it back, took the other out, tried. Kept doing the same thing.
  3. Hmm, do you have an extra standoff or an extra screw touching your motherboard?
  4. crewton said:
    Hmm, do you have an extra standoff or an extra screw touching your motherboard?


    I don't believe so. Plus, it worked for a year and a bit beforehand, and I haven't changed anything inside since I built it.
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