Hi,
Sounds like it's a virus/malware attack, or windows corruption possible from the weekly W10 Tuesday push updates coming into your computer from Microsoft. About once a month or every other, MS will throw an update out that crashes hundreds of thousands of computer but takes weeks for the public to report it and for MS to put out a fix for it.
You can take a look at this Post I just wrote for a user with W7 problems; but the troubleshooting methodology is virtually identical. See here:
Why does windows 7 take forever to shut down
If you're the type of person that likes to go for a shotgun quick fix, make sure that you first
FIRST BACKUP ALL OF YOUR PERSONAL DATA TO EXTERNAL MEDIA! THIS WOULD INCLUDE YOUR LIBRARY...