Login into Windows Vista Home as Administrator by default

Getting frustrated by prompts to run certain programs as Administrator even when his user account is an Administrator level, my roommate today asked me if he could login to his Vista Home laptop as Administrator by default.

I could not find Local Users and Groups in Computer Management. It appears Home edition of Windows Vista does not allow you to manage users in this way.

So if you want to login as Administrator by default without having to choose user at welcome screen, you need to enable Administrator account which is disabled by default and disable any other accounts currently on the computer.

This can be done via CMD.
1. Press win+r (or alternatively go Start->Run...).
2. Type cmd and press enter.
3. In the command window enter command:
net user administrator /active:yes

You have enabled Administrator account. Log off and login with the Administrator account. Now you need to disable or delete other users.

To disable user:
Repeat steps 1 and 2 above.
enter command:
net user username /active:no

To delete user:
Go to Control Panel->User Accounts.
Choose Manage Other Accounts.
Choose the account you want to delete and then click on Delete The Account.

Restart the computer, you should get logged in as an Administrator without any prompts.

Links:
http://en.kioskea.net/faq/sujet-300-access-the-hidden-administrator-account-in-windows-vista