speakers not working!

[matty_18]

i went out today a bought a 5.1 surround sound system for my pc.
i hokked it all up according to the manual and for some reason only the front 2 speakers and the subwoofer works...

the speakers themselves are fine, i tested them all...

does anyone have any idea why this would be?
is it the sound card or are there settings i can alter to make it 5.1???

 

[Mirage]

Is it a Creative Labs SoundBlaster card? If so go to your "Creative Speaker Settings" in your start menu under Creative and enable 5.1. The default is probably 2.1.