Creating an automatic logon for Windows server
Navigate the hives in the left pane until you get to the
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsNTCurrentVersionWinlogon key.
Check the DefaultUserName entry in the right pane and make sure that the value is set to your Administrator account. If it isn’t, double-click the field and enter Administrator or the name of your administrator account in the String field. Click OK when you’ve finished.
Next, look to see if there’s a DefaultPassword entry in the right pane. If you don’t see it, select Add Value from the Edit menu. In the Value Name field, type DefaultPassword. Make sure that REG_SZ appears in the Data Type list box and click OK. When the String Editor screen appears, type your Administrator password in the String field. Make sure you type the password properly. The Registry Editor won’t ask you to double-check it, nor will it compare the password to the Administrator password stored in Active Directory or NT’s SAM database.
Now, select Add Value from the Edit menu. In the Value Name field, type AutoAdminLogon. Make sure REG_SZ appears in the Data Type list box and click OK. When the String Editor screen appears, type 1 in the String field.