iam havin some problems please help !

this is what my screen turns into after a while playin,

i have uninstalled my graphics card drivers and reinstalled them, still same stuff, uninstalled the game, still same, I did however installed some directx sometime ago that might have not been supported by my card, how do i get all the directx files unistalled so i can install the directx from the matrix cd again ? or do anyone of u have some other idea of what to do ?

/cheers illian