ctrl-alt-delete doesn’t work on Wireless Keyboard

Hi,

I just bought the Microsoft Wireless Comfort Keyboard 4000. All the keys work on their own but I cannot use Ctrl+Alt+Delete in order to logon. If I try to do this absolutely nothing happens. No errors, no blank screens, nothing. (To note, it doesn’t invoke the Task Manager either when I’m actually logged into Windows).

I should note that I work for a software company so we have to log in by doing ctrl-alt-delete and I am not able to disable this because of that.

Does anyone know why and how I can fix it so I can keep the wonderful keyboard? I’m not very technical so the better the steps to fix, the more I would appreciate it, THANK YOU!