nfs most wanted trouble

yesterday i finally got it.
after beeing happy and jumping around all the time cause of my unbelievable happyness i tried to start it. worked fine... until i wanted to begin a career/start a quick race (tried it all :/)

i become this screen.

i already installed the patch + new gfx card driver (ti 4200)

the demo of it worked fine some month ago, so i have no clue what it could be :/

does anyone know how i could fix it? :<