Hello HDDGuru forum,
I know this is long, but I am trying to give a full picture of what I have done so far. Any advice is greatly appreciated!
I have a situation where I erased my photos and music from my primary HHD in an effort to open up some space and allow me to ghost the drive to a new larger drive. I got the new drive because my old one was getting too small. I was using a WD Mybook 500GB Home edition for an external Firewire backup. Anyway, Now my computer's OS won't assign a drive letter or recognize any data on it. I did have most of the pictures backed up on an internal drive stored in my fire safe, but when I hooked it up, I got "clicks of death" and the BIOS didn't see it... OH GREAT!

Here is what I have tried so far:
First, I tried hooking the drive to my laptop, and it recognized that the MyBook was hooked up, but didn't assign it a drive letter either.
I have tried a couple of of data recovery programs. I tried HDD regenerator to see if it found bad sectors, and it just locks up (but does recognize it is there). I also tried Stellar Phoniex Windows Data recovery, and when it shows the drive status as 0 sectors. Note, this is with the UBS interface.
Next I took the case apart and hooked up the drive to a second SATA cable and then booted up the computer with my new drive the freed-up MyBook. The first boot was fine, but I can't find the drive in my computer or in the device manager... So I shut down and went into the Bios. I will get to those results next, but ever time I try to boot up with my new drive and my freed-up MyBook, the system just hangs up with a blank screen after the BIOS screen has went away.
In the BIOS, I tried running the SMART test. I did the short test and it took about 2 min and came up as OK. Then I did the extended test and it finished in almost no time, but also showing with out errors.. but the extimated time was supposed to be around 255 min.
The most recent thing I have tried to the MHDD program from HDDGuru. I booted up and began with the EID command, and it seemed to work. Then I began to SCAN the disk and I did this for a while, but ont completely. I got 5 timeout errors at the following:
275450028
393639834
471781941
393640344
491317914
I stopped the scan at LBA 549924812 and the drive parameter is LBA 976773168. I went to run TOF on a small section of the drive, but it told me it couldn't access the drive. Then I tried SCAN again, and I got the same message. I rebooted the computer, but MHDD got hung up in the boot up and I turned it off after about 5 min of it being hung.
I am trying to diagnose what other options I may have for diagnosing the drive. I am going to try the MHDD again since I have left the drive unpluged over night. I think it may be a hardware problem like the PCB or maybe even the head (but I haven't heard any odd head noise). Any advice that can be given would be greatly appreciated!
Thank you in advance!