Has this external hard drive ever worked in the past?
Yes, it worked for about a month after I bought it (on 3-19-10). I was using it to back up my computer, and one day I noticed that it had stopped working several days before. Since then, I've searched the Internet and tried a variety of fixes, but nothing has worked.
One of those sites said it was necessary to install a download from the manufacturer, but I've had no luck finding it.
When you plug it in, is there any jingle type sound heard from the computer?
No jingle, just the sound I always hear when I plug or unplug something. I don't know how to describe it.
Does anything show up when you look in My Computer?
Not unless I turn it off and then on again, at which point it appears on "My computer," but still won't back up anything.