I've had this PC for 2 years now, and I did an upgrade on it about a week ago. I changed around a GPU and the case. I was also running a new hard drive. I soon updated to Windows 8.1. I had trouble with sound cutting out randomly, but eventually fixed it by buying a USB sound adapter. I started using that yesterday, but my friends couldn't hear my voice in skype, so I concluded that my microphone was broken. I started using my webcam as a mic. It worked for one long skype session, but as soon as the session ended, and I rejoined a new skype call, nobody could hear me. I logged on today, and the microphone volumes are both extremely quiet. I'm not sure what to do. My adapter.