Interference and noise

When I moved to a new house I had the same problem. My dell computer speakers had been working for a couple days. Then one day were we had a party my cousin Aryana was playing with one of my babies I had. So the next day I turned on my computer and volume up when i logged in my volume wasn't working , so I ran down stairs and told my mommy and she said I was missing some black cord that llooked like the yellow cord that are suppost to be plugged in. So my mom's friend Ben came over so I couuld go on the internet and I mentioned I had no volume. He said I was missing the black cord too, but then when I went outside to tell my parents that. Then I came back up stairs and the black cord was rapped around my baby doll my cousin was playing with.So the reason why you might not have volume is your black or yellow or one or the other or both might not be plugged in. Or if you don't even have speakers you can use some ear phone plug in things that you use for cd players. Hopefully I helped your problem.