How to let XP system automatically log in when the computer is turned on

Q: After installing the Windows XP operating system, every time I enter the desktop, a user login screen will appear, asking for a username and password. It is really annoying. How can I cancel this login step?
A: It can be achieved by modifying the Winlogon project in the registry file. You can do the following:
Step 1: Run the Registry Editor, expand the [HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon] branch, and then double-click "DefaultUserName" in the right window and enter Your login username. If there is no default user name, you can add this item by selecting “edit →new →string value(s)→DefaultUserName” in the menu bar of the Registry Editor. Note that you should distinguish between uppercase and lowercase letters.
Step 2: Also under the branch, double-click the “DefaultPassword” subkey in the right window of the Registry Editor and enter your password in the blank field.
Step 3: Next, double-click “AutoAdminLogon” in the right window to set the value to “1”. Now close the Registry Editor and restart your computer. Later you will find that the annoying login is gone.