Hum you tried running it in windowed mode? I recall having a ghey problem like that a long time ago and running in windowed mode solved it... Give it a shot.
Check the config file in your game's directory and open it with notepad. Look for fullscreen. Erase and write windowed instead. Then try to open the game again and hope it works.
TW Ign: UnAware
KR Ign: Vaskud