Have had this periodically since upgrading from Vista (x64) to Windows 7 (x64).
Occurs when system is idle (not in sleep).
Last occurrence 12:35 Nov 5th. 2010.
Have run BSOD Dump & System File Collection app as detailed in the post on Blue Screen of Death (BSOD) Posting Instructions.
ZIP file attached.
Thanks in advance for the help.
Windows 7 X64 Retail
System about 1 year old
Upgraded from Vista X64 Retail July 2010