I have an Acer monitor with in built speakers connected through HDMI cable to RX7600 GPU. Previously when I was on Ryzen 2200G CPU I could get sound from the monitors in built speakers. But now after the upgrade the Windows 10 says that it is sending sound to High Definition Audio Device but I am not getting any sound.
Any idea about why there is no sound now?
Just in case try reinstalling your GPU drivers. Try the clean install option.
The iGPU and the 7600 should use the same drivers, but maybe windows just freaked out with the removal of one?
I have not done any changes to the software yet, will try that today.