Hello, 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.