FAQ for Black Screen v1.16   

How can I change the Setup once Black Screen has been started?

To enter the Black Screen setup once the program has been initially installed, you press CTRL-S. Black Screen will then prompt you for your password to enter setup. Once you successfully enter your password you will enter Black Screen's setup.

If this still does not work please try pressing ALT-TAB once, then try it. Then press ALT-TAB again until you give focus back to Black Screen. There are some instances when Black Screen will loose focus and the keys you are pressing are actually going to the program in the background (that has keyboard focus).