I like to use keyboard shortcuts to start programs running. I assigned Ctrl+Alt+F to open Firefox (pinned to the Start Menu), but it would not work. I can use Ctrl+Shift+F and the shortcut works. Normally, I would assume that Ctrl+Alt+F conflicts with one already in use, but pressing that key combination, nothing happens. Any ideas? Is there a way to determine what keyboard shortcuts are assigned and which are available?