I've been crashing in Darkplaces (an advanced engine for Quake) and Alien Swarm recently. The video cuts out, the audio plays the last sound byte before the crash... I've tested the stability of my video card for 2.5 hours in the OCCT GPU test, and I've even reinstalled Windows, and all of this still happens. I have the latest drivers. It seems to me that Nvidia's been releasing shit drivers recently, I see no other viable explanation for this.