Dell PC just 6 months old - working just fine until 2 weeks ago, then silence. Done all the checks, trouble-shooting, etc. PC thinks its working - that's what it says in the dialog box. Speakers (yamaha) separately powered - on and ready to go. Is it time to act on the warranty?
Over the weekend I lost all sound. Did all the checks mute/cables etc any thing the kids could have touched - nothing. Then did system restore to when I knew the sound was working, hey presto I've got sound. No idea what the problem was though.