This has been a long battle. I have been getting mysterious freeze-ups and BSODs for over a year. I have been getting some help from Microsoft, you can see the thread here and everything I have done up to this point.
The person helping me believes it's the atikmpag.sys driver causing the problem. If I run Windows Verifier to check the drivers, my machine crashes and I get a BSOD right away. One thing I notice when I am setting up Verifier to run, there are two versions of Atikmpag.sys. Does that make any difference?
Just now I uninstalled Catalyst, with driver version 15.201.1151.1008 and replaced it with Crimson Beta, driver version 15.301.1901.0. Apparently, this did no good because it still crashes on Verifier.
Is there a version of a driver I can access that is perhaps three years old? Maybe I could try that. Any other suggestions?