Someone PLEASE HELP!

OK Ive got a problem that wont go away and its really starting to piss me off. Every time i launch ANY steam game i get this error: failed to lock index buffer in CMeshDX8::LockIndexBuffer

Steam support shows it as a video problem or not having enough paged pool memory. I can't understand whats going on! I'm running a Nvidia GTX 260 Core 216 and Direct X10. I've looked online and tried almost every possible solution! Anyone have any experience with this before? Any help will be greatly appreciated.

Found the problem. The new Nvidia 190.83 doesnt seem to like steam