I have this generic 2.5" USB 2.0 Hard drive enclosure and a 2.5" WD IDE hard drive. Recently, my brother was transporting some files downstairs and dropped it all the way down the stairs. After we plugged it back in, it came up and all, but it was VERY slow. So, I just left it. Now, (a couple of days later) I plugged it into the computer and the LED on the enclosure come up and all, but Windows will not install the drive. When it tries to install it, it just "fails". The enclosure always had this problem when plugging it into a front USB port and occasionally the back one. But, after a few tries on the back USB, it would work. Now, it just wont work at all. Another thing I noticed is that when the hard drive tries to rev up (spin) it stops and clicks, then starts again. This made me think the HDD was gone. Yet, I undid all the screws on the hard drive and (unsuccessfully) tried to open it. I then put the HDD in the enclosure and it still would not install, BUT the hard drive didnt make the clicking...it spun like normal (then slowed down when it didnt install). Finally, I put the screws back on and the clicking has returned. Any ideas whats dead/how to fix?