I am sorry if this has been asked before, but the symptoms don't sound exactly like mine in any post (or at least that I could find). I have a 1tb Seagate External HD. When I plug the usb into my computer I hear a whirring/beeping sound for about 3 seconds, then it's quiet. The light also goes on. My computer also makes the usb active chime sound. The light then begins to flicker and after about 20 seconds it goes off and my computer makes the usb disconnected sound. Any ideas what this could be? I have tried different cables and usb ports (even on another computer) all with the same results. Should I take it in to a place to retrieve the data? I have little experience with computers and hesitate opening the drive. Any advice would be appreciated. Thanks!