Tried restoring BIOS settings
Tried restoring BIOS settings with F9 in BIOS setup. Didn’t help. Also, my temps were great with the 3rd party HSF, and just OK with Intel’s. Don’t think it was heat related. Checked PS voltages and they looked OK (I have only an analog MM so I can’t verify that they are within tolerances, but this PS was working just fine with the old Clarkdale setup for a few weeks).
Talked with Intel tech today and they agreed it is probably the board. New one is already in process (provantage.com service is excellent so far).
I’m hopeful that the Windows hang on restart I experienced were just related to the (failing) board. So hopefully, I get a new board that just works. Holding on to the processor for now as Intel people say unlikely a bad CPU.
I restored my HTPC back to the Clarkdale setup and will do it all over when the new board gets here. Fun stuff.