It is possible to enable auto-logon for a computer running Windows, even if the account required is password-protected, or when it's a domain account.

To enable it, you need to set some things right in the registry:

Fire up regedit, and navigate to the key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon. Edit the entry DefaultUserName, and set it to the account you wish to log in with. Edit the DefaultPassword, and set it to the password required to log in. If the value doesn't exist, create it (its datatype is REG_SZ). Notice

If no DefaultPass  ...