Windows 7 Intermittent Freeze

So I posted earlier discussing the Windows 7 freezing issue and how updating the bios, etc. appeared to help. That is partially true. However, I'm still fighting the freezing issue. So far I've been able to track it down to non-user input. I can leave the machine alone at the login screen, no user interaction and the machine will still sometimes freeze. It looks like it may have something to do with a background process or an on idle process. I'll keep checking and update my findings.