Secure your Windows 7 Welcome Screen Login & Require Control + Alt + Delete

    Disabling the Windows 7 Welcome screen can provide an increase in security for logging into the computer, as someone who steals a laptop isn’t presented with a list of all possible users.

    Unfortunately, you cannot hide the list of all users in Windows 7 Home Premium, but you can in Professional and above.

    Disable the Display of All User Accounts on login

    To increase login security, you can also force the user to press CTRL+ALT+DEL  like older Windows versions required.

    Enable Control + Alt + Delete for Windows 7 or Vista

    This link also listed a couple other registry settings that I have not tried yet, but will soon.