Secure Logon on Windows7

                              Click  Start and type  netplwiz in the search box.

                     

                       Click the Search results and a window will be opened.

                       Choose the Advanced tab.

 Now you can choose weather you have to press CTRL+ALT+DELETE before logging on.

To enable Secure Logon in Windows 7, you can check the box - Require users to press Ctrl+Alt+Delete. To disable Secure Logon in Windows 7, you can uncheck the box - Require users to press Ctrl+Alt+Delete.