WotLK Please help me

[Immortalem]

So basically, I just downloaded the game and was setting up my keybinds, then I tried to change my music, and then I realized I was in fullscreen mode. I thought this would be an easy fix, so I go into video and change it to windowed, and my screen turned black which I thought was normal cause it usually takes a second to load. Then 3 minutes passed by and it still hasn't changed from a black screen. I waited 2 more minutes and then relaunched the game. Now it doesn't even show the login screen, it's just black. Is there any way to fix this?

[skullatbash]

http://forum.warmane.com/showthread.php?t=403829