Please help me recover my lost partitions WD 1TB HDD

WD 1TB Green Caviar internal HDD
Almost a month ago i dropped my hdd from almost 5feet ht, after that it has gone dead (not detected even in bios), it was giving screeching sounds (may be due to some head crash), I left it aside and now yesterday when i connected it, it showed up but the OS didnt boot, no problem i just need the data not the OS.
Then I connected it as slave drive, what i see is only my system reserved 100mb and C drive are visible and the whole data in C drive is write protected i can copy the data from it but not delete or add anything in it.

DISK 0
(READ ONLY)!?
The C drive of Disk 0 in Explorer it is showing as 50gb only, where as in disk management it is showing as some 73gb which is clear in disk management screen shot and the remaining partitions have gone unallocated.

I have so much personal data stored in it with out any backup any where. The unallocated space doesnt even give the option for new simple drive, even i dont want to make a new drive as it decreases the chances for recovery. I have started a test disk utility on my drive by reading some forums but it is running deadly slow, i dont think it will be of any use, any way i will wait till it finishes, after midnight it showed some message in test disk "no of heads/cylinders mismatch.........." please refer screenshot "Test disk 1" what would that mean...
Test disk still running..

Please help me to recover my partitions as i cant afford to invest in any professional recoveries.
i can assure you that i am a bit techy person so PLEASE GUIDE ME STEP BY STEP PROCESSES THROUGH GOOD SOFTWARES so that i can recover my partitions and backup it...
Im attaching some screenshots for your reference please ask if you need any more info needed to understand the problem and guiding me for the solution.

Thanks in advance

Looking forward for the HELP

The screech was indication of a hardware failure -- which no amount of software is going to correct or overcome.

The best you can hope for at this point is to be able to recover some files.

I have used RecoverMyFiles from Runtime Software to do such recovery in the past -- but every case is different and there are no guarantees of being able to recovery anything.

You can download the trial from their website and run it against your drive -- let it run overnight for best results. You can then view the files that have been found -- but you have to go online and purchase a license to actually save off the files.

You only want to backup stealthrider99?
Download and install "Western Digital Data Lifeguard" and test that disk. Post result. Most likely it's totally faulty

If you can read the disk, you can recover your files with any Linux distro. Here is one option I use:

Emergency Kit - save your files from a dead OS