So I was playing Civilization and noticed I had no sound, hadn't noticed sound since I installed it the other day. Figured it was just the game being messed up and didn't worry about it, not like I play the game for sound anyways. But then I noticed sound wasn't working for anything.
So off I go to check settings. Is not muted, can't find any settings errors, speakers are on, but no noise is coming out. Can't figure it out, I decide not to worry about it for now.
Three days later (which makes it today) I notice the volume slider is all the way down. So not actually muted, but the effect was the same. No idea how it got that way, but easily fixed and now I have noise again. Silly me, missing that when I checked before.