My laptop is no longer sounding; I can't talk about online radio and Skype anymore?

My laptop is no longer sounding; I can't talk about online radio and Skype anymore?

Is probably a mute key pressed.

Look down right, if there's an error message, if so post it.

look at the bottom right at the audio, if there everything is turned up.

if all this is not so, then enter "system manager" in the search box of win10.

use the second.

if there's a yellow exclamation point in "audio", then something is broken.