Try the usual and unplug all USB things. Try again.
Next try getting to Safe Mode. If that fails you need to boot either your W10 recovery disc or USB stick. Or your W10 install and recovery disc or stick. In those you can use the Repair your PC and hope that fixes it. I find I'm having to use this and run CHKDSK /F /R /X on each drive at times.
But before all this we always make sure your backups are current. If not you use one of the too many discussions about getting your files safe on backups.
When i boot up my computer, windows buffers for about 5 seconds, then displays 'Restoring your previous version of windows' for about a second and then turns back off and restarts itself, doing the whole buffering and displaying the message again. Any ideas on how to break the loop and actually load windows?