I had this problem when I first built my pc. The microphone on my headset would only pic up system sound. I solved this by buying a separator to separate the mic from the headphones so I can plug each into their respective inputs. This worked however, the problem has come back and I don't know what happened. I have updated anything and I'm still using the splitter. It was literally working one second, and then not working another. Anyone else having this problem or know a solution?