Disable the Hidden Administrator Account in Windows 7
If you need to work as administrator on your system without having to deal with the UAC, you can enable the built-in administrator account. Windows 7 recognizes three broad classes of users: The built-in “Administrator” account This account is special for a number of reasons, and is disabled by default in Windows 7. Because this account explicitly turns off some important security features, IE Protected Mode, as well as UAC. There also is An account with administrative rights this user has the ability to elevate to admin rights due to its membership in the local Administrators group, UAC still must be clicked YES at key times with prompts that you must confirm. The last is A standard user sometimes known as limited. These accounts do not have the power to perform administrative tasks directly, they require credentials.
The change to the built-in administrator account that is disabled by default, can be enabled by following these instructions.
Click the Start button
Click All Programs.
Go into Accessories.
Right-click on Command Prompt.
Make sure you choose to Run as administrator.
The UAC prompt appears, select Yes.
The Command window with the admin command prompt will open.
To enable the Windows 7 administrator account, type the following at the command prompt:
net user administrator /active:yes
Press Enter on the keyboard
To disable the Window 7 administrator account, type the following at the command prompt:
net user administrator /active:no
Press Enter on the keyboard