no sound on youtube videos

there's no sound on youtube video
sound works fine on everything else
I have
2014 toshiba L675d
laptop with windows7 O.S.

 

What browser(s) have you tried?

Do you mean all other webpages that have sound or do you mean when not on the internet all windows sounds are fine?

 

Make sure you haven't inadvertently muted the Youtube sound. There should be a speaker icon, lower left.

I've done it, drove me nuts for a while.