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I have a computer with Windows XP installed.

My user does not have a password. When Windows starts, it goes to the login screen. Because my user has no password, is there any way to bypass this screen, and log in automatically?

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TweakUI will work well but there is simple a way without downloading the tool.

You can configure Windows XP to automate the logon process if your computer is not part of a domain.

  1. Click Start, click Run, and type control userpasswords2.
  2. Clear the Users must enter a username and password to use this computer check box.
  3. Click Apply.
  4. Enter the user name and password you wish to automatically log on with, and then click OK.
  5. Click OK again and you're all done.

This feature allows other users to start your computer and use the account that you establish to automatically log on. Enabling auto logon makes your computer more convenient to use, but can pose a security risk.

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Easiest way is to use free "TweakUI" tool and select user to autologin in it's "Login" section.

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@M R Jafari: You can currently get TweakUI from Windows XP downloads‌​. – martineau Dec 22 '12 at 13:27

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