http://rutasinplanificar.hol.es/admin/activar-desactivar-windows-administrador.html
I uploaded on a zip file, two command files, one is to activate Windows Administrator Account and the other just to deactivate that Administrator account (the Windows hidden Administrator Account, the real one):
http://rutasinplanificar.hol.es/admin/activate-deactivate-windows-administrator.html
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Para habilitar la cuenta de Administrador de Windows hay que ir a
Inicio, ejecutar, escribir y lanzar 'cmd', o buscar con el buscador o
Cortana: cmdY ejecutar: net user Administrador /active:yes
Cerramos sesión o cambiamos de usuario y ya podemos elegir Administrador.
Cuando no necesitemos que la cuenta de Administrador este activa, simplemente ejecutamos:
net user Adminitrador /Active:no
Si no se completa correctamente, si da algún error, o no se habilita la cuenta de Adminitrador (Adminitrator), entonces buscad "cmd" con el buscador de Windows, o con Cortana, haced click derecho sobre 'cmd' y elegid "ejecutar como adminitrador" (se puede ejecutar como administrador aunque supuestamente la cuenta este deshabilitada y no se pueda iniciar sesión en ella)...
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To activate the real Windows Administrator Account (the one we have since Windows Vista - not sure if it was hidden on Windows XP) you just have to go to Start, execute and type "cmd". Or search "cmd", right click on it and choose "Execute as Administrator". Once you see the black box, Dos Window, just type "net user Administrator /active:yes" and press intro to activate, enable, the Administrator account. Next you switch to administrator account or close your account and you will be abble to log into de Administrator account (no password have been set). Once on the Administrator Desktop you can uninstall what you couldn't on your account or do whatever your account wasn't abble to. Once you end all you need with the Administrator Account. You log off, log into your own account, search for "cmd" with Cortana or the Search Box that you have under Start Menu, right click on "cmd", execute as administrator, and type on the Dos Window: "net user Administrator /active:no" and press intro. That's all, the real Windows Administrator is disabled till next time you will need it ;-)