Windows 10: Administrator Permissions and Two Unknown User Accounts?

I'm the only one who uses my PC with Windows 10.
I noticed one day I had 3 user accounts. One named; "defaultuser0", one named; "Public", and one named; "Mike"

I never set-up a 'Guest User' account so why did my computer show two accounts other than the one named "Mike" that I created?

I have recently been getting a prompt saying "I don't have administrator privileges, access is denied."
When inspecting the user accounts I noticed each of the security permissions were different so I changed them to all match thinking that might help my 'Administrator Privlages Issue" (I was wrong).
At that point I noticed my PC acting 'buggy' so I ended up deleting each of the two accounts without my name on them.
I hope the one with my name is the Administrator account. Do I need the other two accounts I deleted for my PC to act right?
Can anyone tell me how to regain full administrator privileges on my PC and how to return all folder's permissions back to default settings?
My main bug-issue is the windows 10 brightness feature is no longer working and other windows features like weather stopped working. Any Help is Appreciated. Thank in advance.

:)

 

no administrator permission

Hi Ryan,

Let us assist you to have an Administrator permission. To start, follow the steps below to enable the Windows Super Administrator Account.

• Type CMD on the search box.
• CMD will appear at top.
• Right click on it, then choose Run as administrator.
• Type this command & hit Enter: Net user administrator /active:yes.
• After you enable the Super Administrator account, log out on your existing account then log into Super Administrator account.
• On the Super Administrator account, you can now create an Administrator account or give Administrator permission on the existing account.

After you created an Administrator account, we suggest that you disable the Super Administrator account by following the same steps and using this command:
Net user administrator /active:no.

Let us know how it goes.

 

No permission on Administrator user account

Hi John,

Thank you for posting your query in Microsoft Community.

I understand your concern and will assist you to resolve this issue.

You can Enable the built in Administrator account in Windows 10, then create an Administrator account.

I suggest you to refer the steps below and check if it helps

• 
  Press Windows+ X, select
  Command Prompt, and then click Run as Administrator.
  
• 
  When you are prompted by User Account Control, click Continue.
  
• 
  At the command prompt, type net user administrator /active: yes, and then press Enter.
  
• 
  Type net user administrator
  <Password>, and then press Enter.
  
  Note In this command, <Password> represents the actual password that you want to set for the administrator account.
  
• 
  Type exit, and then press Enter.
  
• 
  Log off the current user account. And login and check the are you able to open the files
  

Hope this helps. If the issue remains unresolved, please get back to us and we would be happy to help.

 

No permission on Administrator user account

Hi Arjun,

Thank you very much for your answer?

It wont seem to accept "run" as a valid word?

I clicked on Command Prompt - changed to c:\

Couldn't find Run as Administrator either.

HI Arjun,

Eventually tried the command (admin) and it took me to the Admin User login screen.

"Newusername

It says BRIAN-HP/Newusername

Password"

I have no idea how to rename this Admin Account or create a password for it.

Brian