I've recently purchased Magicka recently on Steam, and I used an activation code to play portal 2 on steam (from the PS3 Version). Whenever I try to play magicka, it starts up fine, but when the book (starting menu?) opens, It doesn't show anything, Only lines, and I'm unable to get any actual game play done. Now the problem with Portal2 is that it starts up fine, I can see that start menu. I press new game, and while in Game play, All I see is black. I would really appreciate any help I could get :)

( I can play portal2 but I cant see anything; also works on all other computers :P) Here's a picture from magicka: file: http://imgur.com/kkH9U