In short, I bought a copy of Minecraft for windows 10 and everything was fine. I stopped playing for a while and today I started again with the surprise that no sound is heard. I've tried all the possible solutions you can find online, but nothing has worked for now.

I'm pretty frustrated so I ask for help

(I know there are many open incidences with this problem, many unresolved or unanswered, so please, do not ignore this or close it saying that someone have already asked. I really need help.)