I have a Dell Opti-Plex 760 with Windows 10 OS. The front face has 2 -1/8" panel jacks. One for microphone and one for headphones. I have used the headphone jack to feed assorted audio playback units. Recently the headphone jack has stopped delivering a signal. Not sure what knocked it out but am somewhat certain that it is a software problem. I have experienced 2 or 3 power failures over the last six months, also when updates are applied, they sometimes change settings. I'm guessing I need to go to maybe a command window and start a reactivation process there.The microphone jack works well and I use bluetooth for audio playback on a sound bar.I have noticed that sometimes I cannot have multiple playback devices enabled. Also I think I need to bring front jack into the sound settings control panels. I am open to any suggestions.
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