on the motherboard.
Since you told us nothing about the motherboard, audio hardware, and such. . .
I have a problem with my 5.1 PHILIPS surround system. All the speakers can?t be used at the same time. Sound only comes from one group(front+subwoofer,center,rear) at the time, depending on how I plug in the wires. For example: if I have the wire for the rear speakers plugged in to the computer and then plug in the wire for the front speakers, the rear ones stop working and sound comes only from the frontal ones. All the wires are plugged in correctly and the settings are correct.
Anyone who knows what the problem could be??