if you have a system restore point  6 months back or so,  try reverting to that after creating a new one for current settings as a  safe option. see if that works.

That install of windows was maybe 2 months old. I don’t actually remember when I bought my 8600K but it wasn’t long ago and I reinstalled then. Really odd. Dialed my OC back a tiny bit and clocked the memory below factory speeds to hopefully fix whatever caused corruption on that level in the first place.