QUOTE (viewtifuljay @ Aug 21 2008, 08:21 PM)

Clicking sounds from hard drives are never good. Make 100% sure the SATA connectors inside the enclosure are making good contact with the hard drive. If they are, then it's one of two things - either it's the hard drive itself that bit the dust, or the drive enclosure isn't drawing enough power to spin up the drive... but if it worked all right with the other hard drive, I'd lean more toward the drive being bad.
IF that's the case, all hope isn't lost. There's the unofficial, last ditch effort "freezer trick". What you do - and I'm dead serious about this - is take the drive and put it in a zip lock bag. Get all the air bubbles out of it - you want it as air tight as possible. Fold any excess portion of the ziplock bag over, maybe even put a few pieces of tape over it to make sure the drive is wrapped tightly. Put in the freezer for a few hours (or over night if you'll have time to work with this first thing in the morning). Take it out, get it out of the bag, and let it sit for about a half an hour at room temperature. Then, put it in your enclosure, and try firing it up. If it works, and the computer sees it, MOVE QUICKLY. It's on borrowed time, and it lasts maybe a couple hours at most before it dies for good. A half hour is more common, and sometimes 5-10 minutes is all you've got. So get the important stuff that you HAVE to have first.
The freezer trick is by no means a sure thing. I've done it several times over the years, and I've had about a 50/50 rate of it working at all, and when it does, a half hour is about all I've gotten out of it. But it's better than nothing.
No, No no. Don't do the freezer trick -because it is not a trick at all. Hard drives with broken reader arms, that are not totally defunct yet, can still start up.
This is important Ebonykrow, if you put your hard drive in your freezer -You may damage the actual disk and be unable to ever recover anything. Freezing a hard disk causes the disk material to contract which can and will cause ruin the disk for good.Now, the clicking sound comes from the reader arm preparing to read the hard disk in side the case. The arm has failed and thus the computer is unable to read the enclosed disk. You have two options.
Option 1Disclaimer: Do not attempt this option unless you have experience working in clean situations with electronics. Do not attempt this option if there is something on the disk that is absolutely vital to your existence, if there is proceed to option 2.If you already have a clean environment setup up, do it in there. If not you can build one. Mine sits in my garage hardly being used

. The best way I have found to do it is to purchase PVC piping 1" diameter and the fittings to make a cube approximately 2'x2'. You then need to get a good strong plastic and cover the cube in it -Very tight. I would advise using at least 2 fans like those in a computer you can rig up to an old power supply to that they blow air out of your clean box (keeps dust etc out).
Next cut one of the flaps so that you can slide your hands underneath it and work in your clean environment. Before use, spray everything inside down with isopropyl alcohol. You will also need a good pair of powder-free nitrile gloves.
Now the fun part. Go to a computer resale store or ebay and purchase a similar drive to one you have lost. In your clean environment open both drives and flip-flop the hard drives. Be sure to never touch the face of the disk. Seal them back up, plug them in and you should be good to go. I would still transfer data to a back up drive at this point as the actual disk may not be operating under optimal conditions within the new enclosure.
Option 2Don't be cheap and spring the money for a recovery service. While they are expensive, if you have vital data on the drive this is the safest method for recovery. They will do exactly what I have describe above, but in a professional clean room. Most services will rip the information to a new HD for you and you get back in the mail, your original HD in a new enclose and a new HD with all the information backed up.
Hope that helps
Edit: Here is a video on you tube of what that clicking noise is:
Clicking hard disk. The shiny disk there is the disk platter that stores your information. That is what you will need to put in a new enclosure. There was a very thorough walk through on PC mag a couple years back Ill see if I can find it for you.
Edit2: I could not find the PC mag article but there is a great video
HERE