By default the administrator account is disabled in windows vista, to do some administrative level tasks you have to enable administrator account.

To enable administrator account in windows vista follow these simple steps:

Run Command Prompt (run as administrator)

Start Menu > Accessories > Command Prompt as shown below

Type the following command in the command prompt

net user administrator /active:yes

You are done finally log off and check the hidden/disabled administrator account is available on the welcome screen.

I hope you find the trick useful please leave some comments below, Thanks.

Hey, Wait what if you want to disable the administrator account again, no problem.

To disable the administrator account in windows vista just this command in command prompt.
net user administrator /active:no

Put ‘no’ in the end of the command instead of ‘yes’