Hello. I've been watching movies and TV series online, and then suddenly sound disappeared. I wanted to check was it just that site, so i tried to play some music on youtube, but that also didn't work. Sometimes the sound comes back for something like 20 minutes, but disappears again. I have google chrome too, so i went there to check would it work, but it was same. Help me please.

P.S. I'm still learning Eng, so please don't judge me if I made any mistakes. :)