As for the one with the missing screws on top, I know that there are products you can buy to replace the top of the hard drive with a clear top so you can see the inside of the drive. Given how sensitive the disk is, doing this outside of a "clean" room can screw it up. A professor did this with an old 1gb drive in my class, showing it plugged into the computer while spinning. It still worked afterwards, but there were problems with it working properly. This is a case where bling is absolutely, positively stupid. It pretties up your computer at the cost of screwing up your hard drive. What were the thinking?!