No picture, weird noices

Today when I tried to boot up my computer, but I got no picture on the monitor, and the fan on my graphic card changed speed up and down all the time. I tought it would be the card it self that was the problem, but when I tried my other card, it did just the same, the RPM on the fan went up and down, and still no picture.
It appears to be nothing wrong with the monitor either, so I'm a bit confused.
Anyone know what the problem might be? I think it might the be motherboard.

4 answers Last reply
More about picture weird noices
  1. Have you checked the PSU?
  2. What is there to about that then?
  3. Try running another computer with that PSU.
  4. Well it's gonna take some time to check to PSU.
    But if it is fried, why is the computer booting, an the fans are working?
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