Built-In Admin Issue

Hello, I recently encountered an issue while cleaning my mother's pc. She has a win 10 home hp laptop, with her own profile as administrator; and somehow while resetting the pc to restore some files lost in a power outage, I managed to turn on the built-in admin profile.

I went through all of the steps to disable the profile through cmd but it only gave me more problems. Upon rebooting, I got the message: User account is disabled, please see your system administrator. I click ok, and my mother's profile pops up like it normally would. I go into cmd with admin privileges, and repeat with no success. I try for amusement the opposite: net user administrator /active:yes and reboot. Now I have 2 admin profiles, that both pop up with incorrect password prompts.

I can still log into my mother's account after clicking ok, but it would be nice to have this fixed. I've spent hours googling on how to fix this and found nothing, microsoft is less than helpful about things and often repeats information that is not needed.

To be clear: For some reason the built-in admin will not disappear, despite everything I do, and now having seen 2 accounts, I am leaning towards this being a registry error. Lusrmgr.msc is not available in her edition of win 10 or I would have tried that too. Any help would be awesome, I'll even take wiping the computer clean as long as I can restore her profile and hers only.

Thanks in advance - Cole

The first thing I would do is create a brand new local user and change that account type to administrator. Log into the new user account and see if you can then disable the built-in administrator account.

You can also try this:
Repair Install Windows 10 with an In-place Upgrade - Windows 10 Forums

The easy way to accomplish the in place upgrade repair install is just to click the upgrade now button:
Windows 10

NavyLCDR said:

The first thing I would do is create a brand new local user and change that account type to administrator. Log into the new user account and see if you can then disable the built-in administrator account.

You can also try this:
Repair Install Windows 10 with an In-place Upgrade - Windows 10 Forums

The easy way to accomplish the in place upgrade repair install is just to click the upgrade now button:
Windows 10

Thanks for your quick reply, I have tried that option as well :/. I created a dummy admin for myself, and attempted the command again; all cmd commands complete successfully, and besides the login screen, there is no evidence of the admin being active. It's like the built-in cloned itself when I hit the reset button. Is there a way to backup a single profile and then restore that to a computer that has a fresh install on it? For some reason I am only able to make system image, I don't believe that would help me

Try Win+R to bring up run dialog. Run netplwiz. See if the extra admin account is listed in there and if you can delete it from there. I don't know of a way to back up just a user account to restore to a new install. You can back up their folder under users and then copy files back into a new account.

Ok, I will try that. If I copy the the user folder for my mother's account, can I just drag and drop after I re-install? I have tried removing the admin profile but I get the error: can not remove built in profiles or something like that.