Windows XP create an administrator account by default which is invisible. This administrator account is not password protected. How to protect this account with a password?
Steps to password protect the administrator account.
- If you are currently logged on to your computer, click Start, and then click Log Off.

- On the “Welcome screen”, press CTRL+ALT+DEL twice on your keyboard by holding down both the CTRL and ALT keys and then pressing DELETE.
- The “Log On to Windows” dialog box appears. In the “User name” box, type “Administrator”. Leave the “Password” box blank if you have not assigned a password. Click OK.

- Open the entry “User Accounts” in the control panel. Click on the icon “Administrator” and select “Create a password”.
- In the following dialog, specify a password for the “Administrator” account. Click “Create Password”.

It is important to create a strong but easily memorable password. A strong password should includes a combination of letters (small and capitals), numbers and special characters, and at least eight characters long.
