POSSIBLE SOLUTION: Run the game in Fullscreen mode instead of Window mode.

Battlefield 3 Open Beta causes my PC to crash in 2-5 minutes into the game, system spec below.
Getting bluescreen error:
STOP:  0x00000116
nvlddmkm.sys
Game: Battlefield 3 Open Beta
Map: Operation Metro
Player: PeteRoy
PC Spec:
CPU: Intel Core i7 920 default speed
RAM: 6GB Triple channel
GPU: NVIDIA GeForce GTX 285 with 285.38 driver
OS: Windows Vista SP2 64-bit

http://forums.electronicarts.co.uk/battlefield-3/1430085-beta-computer-crash-2-5-minutes-into-game.html