Enable Auto Logon With Domain Computer

For this computer to perform automatic log on using domain credentials when powering on.
1. In Run :-  regedit
2. Navigate to the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
3. Open the DefaultUserName entry, type the user name to log on with                               
4. Open the DefaultPassword entry, type the password for the user account under the value data box 
                                        If the DefaultUserName and DefaultPassword registry value name is not found, create a new String Value (REG_SZ) with value name as DefaultUserNameIf or DefaultPassword value

5. Open the 'DefaultDomainName' key and set the value to your domain name (or the computers name if using a local account)

6. Open the AutoAdminLogon entry, type 1 in the Value Data box

7. Quit Registry Editor.

Eg:-
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Winlogon
AutoAdminLogon = 1
ForceAutoLogon = 1
DefaultUserName = domainname/username
DefaultPassword = password