Hi there,
i have this problem, but i've figured out, when it happens.
When Windows freeze , all i can do is reset or power off.
If i press reset button, and while restarting, system message me , that cpu voltage was changed and bios starts to back up to it's default settings.
So, if i have F9 version, it puts back to F4 and i must update bios again.
I don't have overclocked or anything in bios.
Just happens if i press reset button, not if i power off and back on, works normally, also if windows freeze and i power off and back on,
everything went fine, but with reset button no more, i mean this warning message appears.
Maybe someone had similar problem.
It's not such a big deal, all i must do ,. is to be carefull not to press reset button on computer's case, but power off.
Best,
Matej