I'm using a Dell with Windows 2000 Professional, 10GB hard drive, Uniplex Half-Duplex Audio Device, Intel(R) 82801BA/BAM AC'97 Audio Controller...let me know what other info you need. It worked fine at first, the only thing I remember installing before it started acting up is AOL. I tried uninstalling that but it didn't help. Other than that I'm stumped as to what I can do.