
Originally Posted by
Kohan
Specifically, the clicking noise indicates a failing drive arm.
To explain this simply, envision a record player. You place a record on it, gently drop the needle, and music plays.
A HDD's drive arm is similar to this, and the round platters within are like vinyl records. If the arm is broken, the needle is never dropped, and the music (your data) never plays.
Unlike a record player, however, you cannot simply replace the arm. Those parts aren't made available, require extreme care and a clean room (which can be made out of a bathroom, but that's a tangent) to be worked with, and so on, so forth. Additionally, if the broken arm damages your HDD platters, the data written on them is most likely gone forever.
This is why there's no going back from the "click of death." Your "record player" is broken, and it took your whole collection of vinyls with it. Time to start over.