what kind of computer do you have? If it's clicking like that, generally that does indicate a busted drive, but maybe it's just the USB interface that failed in the fall. If you have a Mac, you can go to the Apple Menu in the top left corner, hold down option on your keyboard and open System Information.
If you look at the tree on the left of the window, you'll see USB at the bottom of the list. Check and see if your hard drive is showing up there at all under that section- it would probably read TOSHIBA or something like that.