I have windows 10, msi b450 tomahawk mobo, ryzen 2400g, 8gb x 2 3200mhz ram, using tv and surround sound as monitor, everything worked fine until I installed a new rx 570 gpu. Graphics performance improved a lot, but now no audio through hdmi on gpu. I've tried reinstalling drivers for Msi mobo, amd, windows, realtek, everything I can think of. If I remove the gpu, and plug hdmi back into the mobo, works fine, amd hd audio shows up in audio devices. Reinstall gpu and plug hdmi back to gpu, video but no audio, amd hd audio shows up in system devices. Directx diagnostic shows no sound card. I've tried everything I can think of. Any suggestions?