Thank you for the detailed response. Have you tried: Troubleshoot Application Conflicts by Performing a Clean Startup
If that does not help narrow it down, please follow the http://www.sevenforums.com/crashes-d...tructions.html
to provide us with the Event Viewer logs, system logs, programs installed, services running, etc. That information can be helpful when dealing with freezing as well as blue screen crashes, so we recommend it for any type of crash/freeze scenario.