Been there done that.
I think I was caught in a “death spiral” between auto updates and an inadvertent change in my power settings.
(the first thing I always do with every PC I own, is to set every power saving feature to “Never”)
Something changed this on my machine.
I’m up and running now.
I’m going to attempt to run this thing until it crashes.
* assuming you're the sort who won't rest till ya get it fixed .. lol