If there is a red cross on the speaker icon in your Taskbar, and see a message No Audio Output Device is Installed error, then see this fix.

If an update is available, download and install it. In addition to this, you can also try running the Audio Troubleshooter via the Get Help app. Uninstall and reinstall the Audio device driver ...

What to do if Nvidia High Definition Audio No Sound on Windows PC There are several factors that can cause this particular problem ranging output device is changed to a faulty installed or updated ...

Windows 10 just states "No Audio Device is installed". I got 3 HP Omen Laptops today that lose sound after the windows update. The driver desapear and OS don't detect any sound devices.

Have tried every combination of drivers but cannot get rid of the ?? items in device manager. Using XP/SP3.PCI bus 0, device 20, function 2PCI bus 1, device 5, function 1What are these? Any ideas ...