This HD is dead my friend. The clicking noise is the head trying to move left / right and not beeing able to.
What I'm about to say here will bring alot of comments I know but it's the truth.
If you have Very Important datas on it and don,t want to pay big money to have it back, there's 1 thing that you can try.
Put your HD in the freezer for about 2 hours. What it does is that it contract the steel of the 3 discs inside and let the Arm of the head move )
Take the HD of of the frezer, have your computeer ready to receive it. ( don,t waste time cuz the HD will be warming up fast )
Connect the HD as a secondary HD on a working computer. Boot in safe mode ( faster boot ), and try to access the hd. If it's working, transfert your data to you windows HD.
This is not a 100 % working solution... it's more like a 1 %.
Why tried that very often at my job with customer hd's and it actually worked 1 time. We saved important stuff ( kinda stuff you should make back-up every night but those users are doing it once a year ).
Like I said, Don't Quote to bash on me, it does work, ... maybe 1 out of 100 ! maybe 1 out of 1000,,,, I dunno.