External Hard Drive Broken - Fixable?

I have a Seagate 4TB external usb hard drive that I believe has fallen (it was attached to a laptop). Now, when I plug it into my laptop, the white light on the drive turns on, but it is not recognized by Windows or Ubuntu. If I try to turn the computer on with the drive plugged in, the computer will freeze on a blank screen before any operating system begins to load. Is this drive repairable? How can I fix it?