Hi Misar,
I'm sorry if I do not live up to your intellectual expectations.
I've read attentively your post and apparently you must have a different version of windows 10 than I have, but for the sake of clarity, I'll go and tell you how it happened to me and I hope my memory doesn't betray me.
When I got this pc, brand new, and installed windows 10 I went through some windows that sets it up, I'm sure you know of this, at some point DURING installation I set up a password which the system REQUIRED from me. AFTERWARDS, (i had already set up the password) the installation program informed me that I could use a pin INSTEAD of a password and so I decided for the pin as I figured out it would be easier to remember it (it is). As time went by I forgot the password for I used only the pin and then I got fed up as well of having to give in a pin every time the pc started, and so I googled for "automatic login" and found out that I only had to go to "netplwiz" and uncheck "users must enter a password blah blah", I did that and voilá, from that moment on when I started the pc I NEEDED NOT to give a pin or password as my pc loaded directly to my desktop. The End.
One and a half years later (for two or three weeks) I decided to change the name of my pc and that was the mistake, cause, from that moment on, when I started the pc I'd be directed to a SECOND account, which I never created, and FORCED to write a password. I never created that account and it's untraceble in my pc and that's the reason I'm here.
But, for the sake of the argument, let's say you're right and I'm stupid. The whole issue with Login, password(s), etc, etc does not interest me at all! ALL that I want is to get rid of that ghost account, because I believe when that is done, things will fall into place.
But, if you STILL don't understand what the hell I'm talking about I'm leaving a link for you to visit, for that guy's problem is the same as mine, even the screenshot with two names, but instead of "Tom" you have to replace it with "Francisco", the only BIG difference is that the solution he proposes doesn't work for me, because (as I've mentioned) apart from the start screen I cannot find that ghost account anywhere!
here is the link: https://www.top-password.com/blog/fix-duplicate-user-names-on-windows-10-login-screen/
Edited by TheFrancisco, 27 May 2020 - 04:20 AM.