Blender game problem

i have been working on doing a maze type game, i been working a little each day. now yesterday the game worked just fine i cuold move and such. But now when i press the p button to play the screen gets all distorted! the image is on the left is potato mode, and the right is after i press play. please help! i would hate to make everything all over, but to me seems the file is corrupt??

http://www.angelfire.com/mi/animoshworld/screwed.jpg (copy an paste)

EDIT: Tried running the backup copy i had same thing happens, also happens with other peoples games i downloaded so methinks i broke sumfin. WWWWWWWWAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!

Re-installed blender all is good :stuck_out_tongue: :wink: