How to turn on automatic logon in Windows

turn on automatic logon, follow these steps:

1. Click Start, and then click Run.
2. In the Open box, type Regedt32.exe, and then press ENTER.
3. Locate the following subkey in the registry:
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
4. Double-click the DefaultUserName entry, type your user name, and then click OK.
5. Double-click the DefaultPassword entry, type your password, and then click OK.NOTE: If the DefaultPassword value does not exist, it must be added. To add the value, follow these steps:
   
   
   1. On the Edit menu, click New, and then point to String Value.
   2. Type DefaultPassword, and then press ENTER.
   3. Double-click DefaultPassword.
   4. In the Edit String dialog, type your password and then click OK.
   NOTE: If no DefaultPassword string is specified, Windows automatically changes the value of the AutoAdminLogon key from 1 (true) to 0 (false), disabling the AutoAdminLogon feature