use admin cmd type in
net user Administrator /active:yes
How to enable the hiding admin account for login
1- In the run type: secpol.msc
2- Find and click on, Local Policies,security options,
3- Over to the Right in the policy setting, (accounts: Administrators account status) Enable
Close tht and got to
1- Run, lusrmgr.msc
2- Create a new user, or use Administrater, Built-in account for administering.
3- Right click, Properties
4- Uncheck, Account is disabled
If you chose you can change the name and add a password, now when you log off you can have the options to log in as admin, owner of this pc and have controll over all users.
I do not recommand taking control of the folder I've had issues with 8 doing that