Out of the blue BSOD 0xF4

I'm seeing a bunch of these:

Code:

Event[1318]:
  Log Name: System
  Source: Display
  Date: 2011-09-22T05:26:47.000
  Event ID: 4101
  Task: N/A
  Level: Warning
  Opcode: Info
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Lancelot
  Description: 
Display driver nvlddmkm stopped responding and has successfully recovered.

Try installing this Beta version: NVIDIA DRIVERS 285.27 BETA

I don't know if the low disk space has anything to do with it either, but when it comes down to either returning the drive or freeing up some space, it may be worth it.