I watched a little bit why no sound comes on minecraft when I put my cellphone headphones on my laptop. In the end, when I watched a video on YouTube, everything sounded great. So full of echoes etc. Do you know what my mistake was?
Why are you using Windows Vista?
Because it is going well
Found my mistakes!
under the Realtek HD Audio Manager
on "Speakers"> "Sound Effects" I accidentally clicked on some strange egfect. You just have to reset again
Windows 10 is better