My PC is doing something weird. No sound plays in any app. No YouTube audio, no sound from Windows Media Play playing an MP3, no sound from games, nobody can hear me on Skype (which means the microphone also isn't working), and I can't hear them. Nothing. Except for using the volume slider to turn things up and down. It's like every app is muted.
Spec: Dell Latitude E5570 (Skylake i7-6600U, 16GB memory, 512GB SSD, Radeon m370) - Win10 1809
Connected to a Dell monitor via HDMI
Also connected to a Dell AC511 sound bar
The default audio device is the soundbar, but I've swapped it around with the laptop speaker and the monitor's headphone jack. When I disconnect everything and the only audio device detected is the onboard Realtek audio, no changes. The slider's confirmation sound plays but that's it. Nothing is muted or disabled, though I've toggled that stuff on and off, too. No change if I use headphones or have them unplugged. I've removed everything from Device Manager, deleted drivers, reinstalled, and nothing. I also found the app volume and device preferences, and every app is set to 100.
I hear the confirmation sound either way, but nothing else plays. Not even the test sounds in the Windows sound control panel. It worked fine last Wednesday. Then I took a few vacation days, and it was dead yesterday. Spent time throughout the day fooling with it and no progress. I telecommute and my nearest office is like 3 hours away, and the helpdesk guy is all like ¯\_(ツ)_/¯ and I can send it to St. Louis if I want him to look at it.
I figured I'd try the forums first.