Note 2 don't plays videos or music topic

Hi all,

First excuse me if this is not the good forum for this thread, I'm new to this website.
I have a big problem with my Samsung Galaxy Note 2.
It doesn't play any video or music. Not only in a specific app but in every app I tried.
I tried the youtube app, the stock music app, shuttle music player which I usually use, but it also doesn't work when I go to youtube, dailymotion or any video site with the chrome browser. Videos in my facebook news feed won't play too.
When I try to watch a video or listen to music or simply launch an app like youtube for example, the phone becomes so slow that I must close the app. If I manage to click on a video, it just won't start. Generaly the app crash or the phone shut down or restart.
With the vlc app I can see the video but there is no sound.
It really starts to piss me off, I don't understand what's the problem.
Maybe it a software problem, I thought I could do a hard reset.
But it could also be a hardware problem, specifically something in relation with the speaker or the sound system, because yesterday my phone made strange noises and three days ago it fell on the ground.
Any help is welcome. Thank you for everything in advance.