Strange Developments After Booting Up....

torchwood said:

Hi Buster,
If its still slow loading/shutting down after unchecking, then there could be an underlying problem, especially if you take into account your Space problem thread.

I take it you've done a full scan with MalwareBytes and your AV.
Mind trying ESET on line scan, please dissable your other AV.
Online Malware Detection | ESET
Wouldn't hurt to run these 2 as well
AdwCleaner Download
Junkware Removal Tool Download

post the results

Roy

I did run ESET. It found 2 infected files, ran for almost 1 1/2 hours, then stalled out. It didn't list the name or location of the infected files while it scanned, before it stalled.

I ran AdwCleaner and it found a few PUPs, which I removed.

The space problem may be related to System Restore settings, since I removed my old System Restores, and the space on Drive C went back up to 223 GB (though it keeps diminishing by 2 GB each day, so I have to change the SR settings).