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I have a Windows 8 system with an nVidia 660 video card connected over HDMI to my Vizio television, which is connected via optical output to a 5.1 system.

I cannot get my computer to output 5.1 in this configuration, and I believe it's because my Vizio is reporting itself as a 2 channel device, so Windows will only output 2 channel to it.

I know if I force 5.1 on a PS3 or 360 connected to the TV, my 5.1 system receives all 5.1 channels.

How can I force Windows or my nVidia card to output 5.1? For reference, here's my sound properties pane:

E601i-A3-1 Properties

  • My 5.1 system is actually a soundbar, and my TV has all the HDMI inputs - to save swapping cables I have to go through the TV
  • This may look like a duplicate, but that's because I asked the question already here where it was falsely marked as a duplicate - I can't install ATI drivers for my nVidia card.
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  • You should flag your original question to be reopened, or post about it on meta.
    – Karan
    Jun 27, 2013 at 0:00

1 Answer 1

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Had the same problem using a Radeon 7790.How I fixed it? Spent $14 and bought a Rocket Pro by Belkin. Hooked it up and all 5.1 channels are enabled. It works in all systems that I know of. You can buy them at Amazon.com

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