Excellent.. sometimes Windows features work to our advantage. Do you also use disk imaging? Sometimes System Restore proves unreliable, and disk imaging also provides a more complete solution and...

My suggestion was to turn it off... (quite a common one). Try it... nothing to lose. Meanwhile do research your error message... time for bed.. sorry!

Just a quick thought - I've not researched your error message (which I recommend you do)-
does turning off Fast Startup make any difference?
Fast Startup - Turn On or Off in Windows 10 - Windows...