My first three function keys don't do anything in combination with the Fn key. According to the manual, they are supposed to display different screens, like the F1 + Fn should show help on hotkeys. All of the others do what they are supposed to do, like the F4 + Fn puts the computer to sleep. I have searched through the messages here and don't see anyone else having this problem. The F1 key by itself does bring up the help screen. Any ideas?