My speakers were plugged into the back of my computer where the sound card is. The sound card is integrated and I thnk it's somewhat busted. First, the sound only comes from one speaker while the other has sound but it's very quiet. All my plugs are plugged in tightly and everything looks fine including my volume control settings.
 
Then I plug it in the front of my computer because there is a earphone port. When I do this, the sound it back to normal. Both speakers have sound at full blast again. Could it be my sound card or anything?
 
Tell me if I need to post any specs as well.
 
Thanks