Michael
Oh, why did you not tell me this just 10 minutes ago. :)
Ignoring a "Bricked" Athlon X2 6000+ system, I have just gotten the AMD fx-8150 system flying in more or less 'loose' formation.
So.... I unblocked the backup AMD fx-6300 system. It is likely committing suicide as I write this.
Oh, well "you have to get over this sooner or later, why not start now".
I am going to let whatever happens happen. I will reply here with results.
If KB4056892 is severally damaging the newer AMD fx-nnnn systems, systems still being sold, we should address this in a new thread.
Get back to you if I can. :)