I received the Western Digital 2TB external hard drive in the mail recently and when I plugged it in for the first time everything was fine and I was able to backup a lot of my documents onto it. Now, I did drop it by accident, but it wasn't that high up and I don't hear any rattling or anything and all the lights are still turning on and everything is still functioning on the physical device, but when I go to plug it into the computer it does not show up under "drives" in "mycomputer". When I right click on mycomputer and go to manage, I can see the drive listed in Windows 7, but not in XP. When I try to click on it to format it, it gives me some kind of "I/O" error so it's pretty much useless right now. Does anyone know what could have happened or does anyone have a solution for me? Could that small drop have broken the whole thing? Thanks for any assistance.