Angels have the Phone Box
Ah, okay. So, once you've cleared out the infection(s), you can boot into advanced recovery and restore your system to an earlier time, using a restore point from BEFORE you got the infection. That should get you to the login screen.
System Restore Windows 10 - Windows 10 Forums
Actually, if you have a restore point that exists from before you were infected, you should be able to restore your system to that, and not be infected either. (I would still be running scans though - sometimes these infections sit on your computer and execute at a later date.)