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My AMD 4300/4500 does not play sound through the HDMI port

Question asked by lordylordy on Oct 24, 2015

Windows 7, Two displays -monitor 20" LCD, 2nd Plasma 42". I have tried extended display and I get full screen on the plasma but only the desktop background on the monitor and no control on the monitor either.

With duplicate I get the monitor resolution on the plasma but still sound only on the pc speakers. I have tried to find the graphic card listed in the sound controls but there is nothing.

I have tried downloading the catalyst manager but there are only CPU power readings, no graphics controls at all.

I want the simple answer to this, stay away from gobbledegook