1. Start > Run > Regedit.

2. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

3. Locate the value name AutoAdminLogon set the value data to 1.

(make sure your user is set in the value 'DefaultUserName' if not double click the value name and place in the user you want to automatically log in. Also if you have a password type it in the value data of 'defaultpassword.')