WTF!? DX

So I got up today and discovered that my 500 GB hard drive had once again randomly disconnected itself... Only this time, it didn't connect again. And the computer is acting like it's brand new hard ware, and won't let me re-install it without a software disc, which I don't even remember if this thing even has. I seriously hope the things isn't dead and I can't get back into it, because it holds all my music, Doctor Who, MST... not to mention the story I'm working on. >>; I can't access any of it now.

UPDATE:
Just got back from Best Buy, hoping Geek Squad could do something about the drive. Their computers couldn't read it either, and because breaking into it would invalidate the warranty, all they could tell me for now was to contact the manufacturer and see what they have to say about it. =3=

End