Clicking noise isn't a good sign.
If you didn't have backups, then, well, if the data is really important, then you send it to a data recovery place, and hope they can recover it.
If the data isn't that important, but you still want to try, (and your warranty has expired) then you open it up, plug it into your computer via internal connection, and if BIOS sees it, your in good shape. If it don't. You are most likely SOL, and have to pay big $$$ to get the data back.
If it sees it, but you boot to windows, and see no files, then check the SMART of the drive (use crystaldiskinfo) and see what it says. Then use something like testdisk (also free) to recover what it can. If you want to be extra careful, then you clone the drive 'as is' to another HD of same or bigger size, and when clone is done, you run testdisk on it.
