After waiting it out, it went back to working again. I think it was just gathering its bearings, and I was impatient. I didn't expect to have to wait so long at the welcome screen, and I think I perturbed it. Not real happy with myself on that one. I'm doing a full system scan right now. It seems to be using more of the CPU for longer at startup, but that could be my imagination, not sure how to tell.
To answer your questions, no it was not running hot, and it was nearly silent. The hard disk would flash every once and a while, but certainly was not overactive. And, I ran the restore via the installed restore capabilities. It was not a total revert, just to a date about a week ago.
We'll see what happens, I guess. I appreciate your reply.