Mysterious! My sound suddenly disappeared after always functioning normally. Totally absent now - even after reinstalling twice, e.g. no sound even on the opening page. I have normal sound on all my other games, including Endless Space 2, and on all other applications. Strangely, sound suddenly game back on one load yesterday ( I didn't do anything differentl), but then was gone again on all subsequent attempts to  load the program befoe and after reinstalling. Any ideas?