I recently bought a new computer with an Audigy 2 ZS sound card and hooked up my old speakers which worked fine on my old system. Problem is I can't get sound from them. I tried the sound diagnostics in Creatives software and it passed all the tests except I can't hear anything. I tried plugging in the speakers in every combination I could think of as well. I also can't hear anything on my headphones when I try to play a CD in the DVD drive. Could this be a problem with my sound card?