Solved! Asus Realtek audio driver problem

Apr 27, 2020
I have a asus ROG G503VM, that has one 4pole 3.5mm combo jack. I have been using a combo to mic and sound adapter for a few years now. Everything worked fine until a few days back.
I have reinstalled my Windows 10 Home installation and the system started not using my 3.5mm external mic. It instead uses the integrated microphone wich is pretty s**t.
I have tried installing the recommended drivers by asus, that didn't help.
I have tested my setup on a different pc with combo jack and everything works.
So the problem can only be in software.
Any ideas how to fix this?