How did your brother delete the administrator account?
How much users are currently in use?
I may have a fix tho.
- Go to the start menu and type in "cmd"
- Click on it
- Type in this command. "net user"
Now it will show up with all users on the computer. Administrator should be on that list no matter what, unless your brother messed with the registry.
Now close cmd and follow these steps,
- Go to start menu and type in "cmd"
- Right click on it and press "run as administrator"
- If it asks you for a password, enter the password you used for the admin account, if not, just continue.
- Type in "net user administrator /active:yes"
- Log out and sign in the administrator account.
If you had data on the old admin account you can recover it by going to ,
C:\Users and selecting the old administrator account.
Note: I do not recommend using the administrator account unless you know what you are doing. Make a new account for yourself and use that instead of admin.
You can make a new account via control panel or you can just look it up.