My PC turns on at 6AM to get updates etc. Waking it up a couple of hours later I often find "Windows has recovered from an unexpected shut down". I've never actually seen the BSOD.
I'm fairly obsessive about getting the latest updates and drivers.
Files attached as per this
notice, plus report from WhoCrashed.
Windows 7 Professional x64
Retail Upgrade - upgraded from itself!
Age of system: varies, mostly <18 months
Age of install: Windows folder created 14 July 2009