I've been experiencing this problem for about a week now. It started seemingly randomly, as I haven't made any significant changes to my computer. If I try to hibernate or shut down my computer it hangs up on either "Logging off" or "Shutting down" and stays there. I've let it run for as long as an hour, but ultimately I have to crash my computer every time I need to turn it off.
I don't know what to do here, so I would really appreciate some help