Failed to play tone.

[Durnik42]

Ok thanks for the help guys much obliged (Y)

so i managed to fix it heres what i did.

right click the audio tray icon -> playback devices
right click hdmi audio -> properties
under the general tab click properties -> driver -> uninstall
check the box to uninstall software/delete driver software and click okay

Go into the device manager and click the scan for hardware changes button."

I did this 3-4 times to delete all the past AMD HDMI Audio drivers and it reverted back to the generic Microsoft one and voila audio works fine now

Hi, I was having this issue as well and this seemed to be the key BUT I was still having 1 small problem.
Once I'd done the last step the device appeared again under a different name and seemed to work perfectly (test tone played as it should),
however, only moments later, it disappeared from the list and re-appeared once again with the AMD driver and the error began all over again.
after a while i realised that rather than uninstalling the driver I'd try the "roll back driver" option.
this worked for me, pushing the device to work fully and now I can watch all of Netflix with friends.
(the final step of scanning for hardware changes wasn't required at all using this method.)