hello 

my problem is this: when i set my soundsettings to stereo(2,0) on my computer, I can hear sound from all 5speakers thanks to my surroundsystem, but when I change the settings to 5,1 surround sound,  the 2back speakers go silent.

I installed th system a couple of days ago, with the 5,1settings and it worked fine, but now the to back speakers go silent..have looked for answers for hours now but no luck!

 My config: relevant info

Graphic Card:asus radeon hd6870(using hdmi to my bose v35 5,1 system) No overclocking

Catalyst version:12,10

Operating system: Windows 7 64-bit

Display: Samsung HDTV through Bose v35(hdmi)

thanks!//mike