When I attempt to use the CTRL + ALT + DEL feature in windows 7 pro, it keeps resetting itself to not requiring it. I have tried this before in Windows Vista and XP and the same thing happens. My laptop is a Dell XPS M1530, which has a fingerprint scanner.
I have tested setting the DisableCAD registry setting, and using netplwiz, and local security policy, and it consistently resets to not requiring CTRL + ALT + DEL.
Any suggestions?