Hi,
Thank you for writing to Microsoft Community Forums.
We understand the concern as you are unable to login to the computer. In this scenario, we would suggest you to perform these steps and check if that helps.
Step 1: Connect to a different network.
We would suggest you to connect the PC to a Ethernet connection or to a different Wireless network and check.
Step 2: Sign in Safe mode
Press and hold the Shift key from the keyboard and use the mouse click on the power icon in the lock screen and select Restart. This will help you to boot the PC in WinRE mode and then click on **Troubleshoot > Advanced Option >****Startup Settings > Enable Safe Mode > follow the onscreen step.**Now when the PC boots in safe mode, try to sign-in and check if you can login.
Let us know the results. If the issue persists, we will certainly assist you further.
Aditya Roy
Microsoft Community – Moderator