5.1 Channel Surround Sound not working in Windows 10.

I recently upgraded to Windows 10 from Windows 7.

Upon doing so my 5.1 surround sound home theater system is no longer working.  It is a Samsung CT-5550 Home Theater System.

I am using an Optical cable from my Home Theater system into the back of the motherboard.

I have installed Realtek’s Windows 10 driver, Gigabytes Windows 10 driver, the driver that came with my motherboard, that previous worked on Windows 7 and fiddled with all manner of settings between all of them and nothing.  It is not working.

When I set the output to 5.1 and run a test, it tells me Test Tone failure.

The highest output I can get is 2.1 channel @ 48hz.  I can get 2.1 @ 92khz but it’s spotty.  The curious thing is, when I test the Encoded option for Dolby, it works.  I can hear it out of all speakers.

Please someone, anyone, fix this for me.

For reference, here is what I’m looking at.

This is my speaker system.

When I test the Encoded Format Dolby Digital, the test runs through all the speakers and I can hear the tones.

Dolby Digital Plus is listed as “On” but for some reason did not show in screenshot.

This is what I get once I set both Realtek control panel and default format to both 5.1 channel surround sound and run a test.

All is set as it should be, it’s just not working.

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