It's a SimpleTech USB 320 GB external hard drive.
Today, it dropped on the floor. Immediately following, Windows 7 popped up a "Failed to install driver" notification, and the hard drive started clicking until ultimately it flatlined (no spinning or feeling in the drive when holding it).
Upon turning the product off then on, the drive inside spins and clicks for about a minute and dies again.
Plugging the USB into other machines does nothing - they all act as if there's nothing plugged in.
Is there any way to check if the USB plug-in is even being detected? And, given the information here, is it possible the data on the drive is still salvageable?