Really stupid question with (probably), a really easy answer.
Got a Logitech wireless keyboard and for some reason the volume and mute buttons on the keyboard have stopped working (like they did work 5 minutes ago!). Everything else still works fine (so its not the batteries). I assume I have hit a 'switch off the volume controls' button, but no idea where/what it is. Any ideas?
Result! Thanks. Should have thought of that myself!! Why are computers so *** stupid as to need 'switching off and switching on again' to make them work?