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I used Windows 7 until this afternoon and my 5.1 sound system worked just fine. My motherboard is a Gigabyte B75M-D3H.

I have 3 inputs on the back panel:

  • Line-In
  • Line-Out
  • Mic

I was able to configure my Windows 7 to accept all these as input (L and R in Line-Out, C and SW to Line-In and RL and RR in Mic).

Today I installed Windows 8.1. It can play only 2 satellite speakers and the rest of them are mute.

I installed the Realtek driver and in the Sound Manager it can play 2 satellites, the subwoofer and the other speakers can't be heard.

In the Windows test program, it can play 2 speakers.

What should I set to make Windows use all of my speakers?

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  • You did set your speaker config to 5.1, right?
    – Daniel B
    Jan 5, 2015 at 23:36
  • The Realtek CP that comes with windows is very generic. Get their own from realtek.com.tw/downloads …on second thoughts, that pinout indicates you don't have a 5.1 header, only stereo
    – Tetsujin
    Jan 6, 2015 at 9:43

1 Answer 1

Reset to default
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Finally, I've found it.

If you open the Realtek Audio Manager and select the visual representations of the inputs by double click on them, you can set their behavior.

Here you can see them:

enter image description here

enter image description here

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