BadBoy7: Off the top of my head, try the detaching and reconnecting cable from your PC to the monitor, that is often the answer...maybe replace it if you have a spare, especially if it looks knackered
The same with the monitor, try a different one if possible.
If neither of those rectify the problem then it points to your PC itself..... take the side of your PC and try removing & putting the Video card back in.
After that, you are running out of possibility's, either the power supply or motherboard
(do skréše) Jak chceš někeho přivitat jeho rodnó řečó, zkos veožit našo Špilošovo mluvo bóchnotim do linko "vic o řečách" pod maléma fanglama. (pauloaguia) (okázat šecke vechetávke)