Shoutbox

First of all, press Winkey+R to open up the run dialog, then run dxdiag to check that your card is running directx correctly (this happened to me) before, I really don't know what caused it because removing my drivers completely and reinstalling sorted it out. Of course it might be worth your while to open up your computer and clear it of dust etc, to prevent the system from overheating.

Also dude, re-size your screenshot