Soldato
Does it happen when u install and use factory reset option and have you tried min install not full install of drivers?
Could be one of the amd audio drivers when amd drivers install causing it u know.
As amd installs a amd hdmi audio device driver and amd stream audio driver and if u got onboard enabled then it could be conflicting between one of them. So after install go to device manager and right click and disable realtec driver and amd stream driver so hdmi one is left providing thas how u want ur audio to be used.
Could be one of the amd audio drivers when amd drivers install causing it u know.
As amd installs a amd hdmi audio device driver and amd stream audio driver and if u got onboard enabled then it could be conflicting between one of them. So after install go to device manager and right click and disable realtec driver and amd stream driver so hdmi one is left providing thas how u want ur audio to be used.