Stand a little on the tube and need your help.
If the laptop starts up, you have to enter your password. And you can later enter a name which will appear above the login when starting up. For me there's user. With another laptop I found it in the system settings, now I'm standing on the tube because I can't find it.
Which operating system?
Whose PC is it?
Windows 10 and this is mine
Ok, if there's a user at login, then he forgot the username. Then you can only hope to have the right password on hand.
this allows you to create a new user in the user account management. I advise you to change the name, for example
dirk1
With the Windowsexplorer you can access dirk (old) via user and continue to use it with a link to the new desktop, for example.
I wish you success.
I have been using MS SW from the beginning. I have been using Linux Ubuntu for a long time, IOS also Android with others.
Resume The unreliability of a BS in a global company like MS is second to none… Sorry…