Resetting Windows from the login screen

If you don't remember the Windows password, you can try to reset Windows from the login screen.

Restart the PC to display the login screen and hold down the Shift key while clicking the Power button (bottom right of the screen).
After this, choose Restart. After this, you can release the shift button.
After the computer reboots, select Troubleshoot > Reset this PC.
Follow the instruction on the screen.