Not possible to add another user to my PC, Windows 10

I bought a new laptop
Windows 10 installed, I follow the dialog to create the first (admin rights) user ...
Once completed, I realised that it took my name as login.
The PC is for my bridge club, I want another name and delete the first one
I first created a dummy user successfully, with local admin rights
I login as that user, says root.
I deleted the first one, ok
Now I want to create a new user
Parameters, etc... on the page to create it, I click the (french translation) Add a user in the computer's parameters
Then on the next window,  Add another user on this PC
Nothing happens !
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RaminTechnical AdvisorCommented:
in a Command Prompt as Admin type:

 net user administrator /active:yes

Restart and log in with Administrator account, the create a new user for yourself,  

To disable that administrator account just type:
net user administrator /active:no
Yes, use the command prompt. No need to activate the local admin, first. Just right click cmd.exe and select "run as administrator" and then
net user /add newuser newpassword
net localgroup administrators /add newuser

Open in new window

The 2nd command adds him to the admin group (if needed). Of course you need to use the localized name for administrators.

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LeTayAuthor Commented:
I tried both net user ... /active:yes and net user /add ...
Says system error 5 !
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As I told you, you need to start cmd.exe using right click and "run as administrator" before you launch those commands.
LeTayAuthor Commented:
I did that, runas etc... (in addition, my login is already administrator)  !
Error 5 is still there
RaminTechnical AdvisorCommented:
You need to use a Windows 10 installation media to boot the system,  
1.Boot from a Windows 10 Media (DVD/USB)
 2.Once you get the welcome screen of installation with the option “Install now”
3.Click on Repair your computer
 4.On the next page click on Advanced Options
 5.Now click on Troubleshoot
 6.Lastly click on startup options and use command prompt then use those command which we mentioned above.
I don't think you did as suggested. Error 5 is "access denied" which means you did not elevate cmd.exe by right clicking it, first.
@Ramin No, a bootdisk cannot execute commands that affect users.
LeTayAuthor Commented:
You are right
But where is that cmd.exe that I have "right-click" please ?
RaminTechnical AdvisorCommented:
You can also Restore the PC to the state before that problem with system restore :

 Open the Start menu and click or tap on the Power button.
 Then, while keeping the Shift key pressed, click or tap on Restart.
 Note that you can also use the Shift + Restart combination from the Sign In screen.

click or tap Power, press and hold Shift and then click or tap Restart.
 Then, Windows 10 reboots and asks you to select an option. Choose Troubleshoot.
 Then, on the Troubleshoot screen, select Advanced options.
 On the Advanced options screen, choose System Restore, select a date.
LeTayAuthor Commented:
I found it, it seems to work now ...
I keep you informed
LeTayAuthor Commented:
I have done this
After creating the new user, logoff and connect as the new user
Then logoff again and connect as admin
Copies 3 shortcuts from admin desktop to new user desktop
Logoff admin
Login new user  .... screen becomes black !
Alt-ctrl-Del, login as admin, screen becomes black !
RaminTechnical AdvisorCommented:
One way to solve this is system Restore, if Windows can not boot completely then force it to turn off by pressing and holding the power button for 5 seconds.
then power on and force to power off again ( do it for 3 times until Windows take you to Recovery Mode.
then try to restore your PC using my previous post
The desktop goes completely black, only the mouse cursor is left? That would mean, explorer (the windows shell process) is crashing. Open task manager using ctrl shift escape keys together, make it display details, start a new process from the file menu: Explorer.exe and see if it goes back to normal. (this is no solution but just a test).
LeTayAuthor Commented:
Found another way in booting with shift etc...
Works now
Should not have deleted the original admin user...   Just edit to change the name!!!
LeTayAuthor Commented:
Could not find how to change the name
Now ... I know, thanks !
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