I have a similar problem. It initially lit up and seemed to be working, but then stopped. It wouldn't lit up at all. I uninstalled and reloaded Universal control and Studio one. It lit up again and was actually working for a while, then stopped again. When I try to make sure that the Atom is set to Send and Receive, it doesn't show up in the pull down menu. Apparently this is a common problem. Why hasn't Presonus provided a solution? Like one other poster, I'm about ready to go back to Tascam and basics.