If you opened that hdd outside a clean room the drive is toast.
You can try a program like recuva or a linux live dvd to see if either can recover files.
The next step is to determine how important these files are and how much you want to spend.
So, like usual I encounter a problem that it seems nobody has dealt with before or at least not that I could find. I'll get right to the problem my secondary hard drive (Which I haven't backed up in 2 weeks) has died. AT first the clicking noises it made sounded like the click of death but I didn't post. I opened the drive to move the arm off the disk in hope that I would be able to get it to work long enough to image it however, upon opening I found the arm where it should be and the disk unscratched. I moved the arm back a bit more in worry that it was still in the wrong spot then closed the drive and plugged it in. No beans. In fear that I moved the arm to far I opened it again and found it had moved itself back to it's original point of rest.
Now, I am worried here that I could lose some important stuff if I can't this to work. I don't want to send it to data recovery because I would also have to send my new drive and Christ it is expensive (The recovery not the new drive). I haven't tried the freezer method yet and I am willing just wanted to check here first.
I am going to provide a explanation of the noise. Every second or so there is a brief beep followed by a much softer click. I pretty sure that this is the arm but I am no expert so I can't confirm. This may very well be a different form of the click of death but from what I have seen the click is a much longer buzzing noise and most data is still recoverable or at least the drive is recognized.
I really need a hand here guys. Should I try the freezer method? Please forum I really need this data.