My Headphones are not Working Properly

Hi! I have a problem. My Beats Pro headphones are set to default communications device on Windows 7 and they don't even have a mic. I want to listen to my music and Skype calls, but it won't let me. But when I restart my computer and log back into my account, they show up in the audio control panel for a few seconds, and disappear. I don't know what I did. I also tried to plug in a different headset and that one didn't work, and it usually did. Did I delete something? Or set my audio jackthing wrong? I need help!