If that doesn't work, please go back to the Windows Recovery Environment. From the 'Choose an option' screen, click Troubleshoot > Advanced options > Startup Repair, and see if the system can repair itself.
Click Troubleshoot, then System Restore, and select a restore point from before the issue occurred. Let the process finish and check.
Click Troubleshoot > Reset This PC. Choose cloud reinstall instead of local reinstall.