No sound after installation of Debian 9 (SOLVED ITSELF)

[Vitek]

Hi everybody, i need your help. I am newbie, installed Debian 9 about some days ago and I really tried my best to google my problem.

Sound does not work at all. I have dualboot with Windows, so on my windows 10 there is no problem with sound. I tried updating alsa, unmuting everything in alsamixer, different options in pavucontrol and many other things I found on different forums.

The sound in system does not work bad, sound card is recognized, I have that icon there, when I play something I see that it does something in Pavucontrol, but no sound comes out of it, headphones are same.

Weird thing is, that sound already worked in Debian 9 before, but I had to do complete new instalation because of booting bug (Grub didn't see Windows).

Thank you for any help!

Some info:
Laptop Asus X555U, Intel Core i5 6200U Skylake, 64-bit, 8GB RAM, NVIDIA GeForce 940M 2GB
Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
OS: Windows 10/Debian 9

[Vitek]

It suddenly started working with no reason. It made very loud noise and it works after rebooting too. Any idea what the hell it was?

[None1975]

It made very loud noise and it works after rebooting too. Any idea what the hell it was?

Hardware problems?