Note: Click on any image for a larger view of that particular image.
Click
,
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then 
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Type CONTROL USERPASSWORDS2 then click 
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Select the user/users to which you want to be able to autologon, and uncheck Users Must Enter A User Name and Password To Use This Computer
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Click Apply, then You will have to type in the current password.
Then Reboot and the computer should now autolog you on. (Note: for XP Home Edition, don’t select to auto login as the Built In Administrator , you will get restriction errors)