Print screen does not function from my Logtech Ultrax Premium Keyboard P/N 868029-0100 PID: ST936JO3756
Check the Logitech web site for the driver. How do you know when a politician is lying? His mouth is moving.
Did it work with other keyboards? Windows may have disabled that function. It's mostly a dos-holdover. Anyway, it's actually <shift><print screen> and not just <print screen>.