A few days ago it just randomly died... I have no more sound coming out of my computer speakers. It shows everything as working correctly, but I hear nothing... my speakers have 2 wires, the green round wire that goes in the green jack in the back and branching off of that wire is a USB wire. I tried plugging the USB wire into several of the different USB ports in the back and it doesn't work on any of them. However when I plug in my headset I can still hear music on them... so I don't think my sound card is dead... ***?