Win 10 login prompt Pin code unavailable solution
1, advanced security mode: on the Windows login screen. On, press and hold the Shift key to select the power supply to restart in turn.
2. After the computer restarts to the Select Options screen, select Troubleshooting, Advanced Options, Startup Settings and Restart.
3. After the computer restarts, you will see a list of options. Select "4" or F4 to start the computer in safe mode. Or, if you need to use the Internet, select "5" or F5 to enter "Network Security Mode".
4. After entering the safe mode, you can switch to the local administrator account first.
Then right-click the start menu, select Run as Windows powershell Administrator, and then enter.
Dism/ Online/Cleanup-Image/Check Health
DISM.exe/ Online/Cleaning-Image/Scan Health
DISM.exe/ Online/Clean-up-Image/Restore Health
5. When you are finished, switch back to your Microsoft account and try to log in.
More wonderful tutorials are in official website, a small white one-button reloading system.