Latest and greatest drivers aren't always the answer (remember how XI would respond sometimes). Just saying... been running stable on my laptop (GTX 670MX) with the 307.07 release.

Double check background processes. Make sure you aren't getting any weird pop-up messages and such at the time it crashes (more a potential issue if running true full screen).

Also, monitor your system's temps too--hot spots around your GPU, RAM, or CPU can cause really strange behavior. So make sure you have good airflow in and around your system (especially in the summertime).