[User 341562]

You seem to have audio driver problems.

Do you have an AVR for your sound or are you using the speakers from the LG TV?

Are your audio devices correctly setup in Windows?

Hi,

I'm using the TV speakers through HDMI in my PC and a soundbar (Bose Solo 5) in my HTPC. These screenshots are from my PC: I've changed the defaukt format in Advanced tab as you said.

[Karellen]

I'm using the TV speakers through HDMI in my PC and a soundbar (Bose Solo 5) in my HTPC

But you don't have that selected in Kodi. You are using Default audio instead of HDMI - LG TV (Sonido Intel® para pantallas)
Go to these settings and choose the correct audio device in Kodi... https://kodi.wiki/view/Settings/System/Audio

[User 341562]

I'm using the TV speakers through HDMI in my PC and a soundbar (Bose Solo 5) in my HTPC

But you don't have that selected in Kodi. You are using Default audio instead of HDMI - LG TV (Sonido Intel® para pantallas)
Go to these settings and choose the correct audio device in Kodi... https://kodi.wiki/view/Settings/System/Audio 

I tried both, Default and HDMI (Directsound and WASAPI).
Now I'm testing KODI in Portable mode with the default skin. So far I installed some addons and everything works ok. I'm going to try with Artic Zephyr and get back to you.

[Karellen]

I tried both, Default and HDMI

No, don't "try both". They are not optional. Set the correct device and restart Kodi.

[User 341562]

I tried both, Default and HDMI

No, don't "try both". They are not optional. Set the correct device and restart Kodi. 

It's working ok with the same addons and skin than before but what I don't understand is why it works now in portable mode and in normal mode, with the same options and configurations, it didn't.