I got a hdtv hooked up to my pc, but when i've tried connecting surround speakers it didn't work at all, I've bought a Sony STR-DE845 reciever and already had some speakers, Im 100% sure that i've hooked up the speakers and sub the right way but when connecting to a pc through video1 output with wire(red and white) there is no sound, i've tried all the channels same way and already messed with control panel sound option but there is still no Sound!((((