5.1 surround sound issues

Now I know alot of people posted something about this topic but no real answers have been given.Mobo : MSI z77a-g43Sound : Realtek Latest Driver 6.0.1.6823 from 1/13/2013Similar issues with the rest of the people. 5.1 surround sound speakers but only front work rears wont work unless you Check "Speaker Fill"but even than its pretty bad, bad sound quality coming from the rear.I checked the output and inputs for the audio is OK.Windows Sound setting i configured the speakers to 5.1 Surround and tested every individual speakers/sub works.I checked for the latest drive yes i do have the latest drive.I made sure all the volume is at 100 percent under Sound Levels, even the rear gray rear black etc. everything balanced.Even messed with the enhancements and everything nothing. Now heres the catch, on Youtube all my speakers work, On certain application it goes back to basically a 2.1 speakers.

With that said I unchecked the give certain application control of the device thing. Nothing changed.Checked windows update hoping they'd have something for this issue but nothing related.So is this Windows 7 or Realtek problem?. I just bought these speakers hoping for a full 5.1 surround sound with all applications, just very frustrated i spent 100 bucks on something that wont work properly. (yes i know people spend more).Anyhow could someone help me fix this issue?.Like give a real answer instead of the whole test / configure the speaker reply.Thank you much.

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