Same here. I've tried everything: reinstalling the game, updating drivers, changing resolution in the Registry.xml file, switching to windowed mode, running the game in compatibility mode with Windows 7, adjusting settings in the Nvidia control panel, but nothing seems to work.

In another forum, a user mentioned that he tried running the game with a second monitor, and magicaly it worked. It's something to do with the monitor/game update/GPU compatibility, for sure, but no idea of what. 

Update: Found a comment on a steam discussion where the user tried to change the resolution to 1280x768 and launch in windowed. It worked!!! Don't know why but that is the ONLY resolution the game works in my system. So anyway, hope this helps others still having the problem.