I was playing XCOM yesterday and went to do something, when I came back there was static coming from my headphones. I can hear the static slightly when using the speakers, but it is really loud in the headphones. I have an Xonar DG and SuperLux HD 668B headphones. I have tried multiple headphones connect through my speakers and directly connect to the headphone port on the back of the card. What is also weird is I can hear it when the headphones are connect to back port and switch the sound card to use the front port. I would think I would hear dead silence, but I don't. I have also rebooted my computer. It is a buzzing sound with scratching sounds on top of the constant buzz if it matters. Any suggestions? Did the card die?