
In Device Manager, expand Sound, video and game controllers, right-click on your sound card, and click Uninstall.On your keyboard, press the Windows logo key and X (at the same time) to invoke the quick-access menu.The simplest way to check if this is what has happened is to uninstall your audio driver:

DOWNLOAD AUDIO BAR UPGRADE
(This quite often happens after an upgrade to Windows 10 from an earlier version of Windows.)
DOWNLOAD AUDIO BAR DRIVER
If your sound driver has somehow been removed, corrupted or become incompatible with Windows 10, you won’t be able to hear any sound from your speakers.

Right-click the sound icon at the bottom right corner of your desktop and click Playback devices.Check if your speaker or headphone has been muted by accident. If the audio device has been muted, you won’t hear sound from it. If they work in another computer, the problem is probably caused by the cable. You can plug them to in another computer and see if they work in another computer. If you don’t hear sound from your external audio devices, like speakers and headphones, you can check if their cable is broken. Just start at the top of the list and work your way down.

You don’t necessarily have to try them all. More importantly, it’s usually a pretty easy problem to resolve. So if you’re experiencing this problem, rest assured, you’re not alone. Particularly immediately after upgrading from a previous version of Windows. One of the most common problems with Windows 10 is no sound.
