I made a computer about a month ago and it was the first time I ever built one. When I finished putting everything together and I turned it on, it worked! Everything works fine but I don't get any sound. I was using an on-board sound card and thought that it was just a dud. So I bought a real inexpensive sound card. I put it in, plugged it in, and installed the drivers that were on the cd it came with. Now my speaker system is 5.1 and so is the sound card. I think the on-board sound was 6.1 if that makes a difference. But the new sound card doesn't work either. i don't know what it could be. Help please.