I'm having this same problem with my father's new Asus laptop at logon. It worked fine the first couple of times, but then he did an office install and update, and that was when it all went wrong.
I have tried doing all the other fixes I could find on the net, but could not get the stupid machine to open the command prompt window that was needed to create an admin user to bypass the logon screen.
Is there any other way to fix a forgotten password issue in windows 10 without password reset tool or command prompt options?
Any help would be greatly appreciated.