Can someone recommend a software recovery program please

Hi

I have win 7 ultimate on my pc and recently purchased a new a-data 640gb hard drive and put about 200gb of data on it

So probably due to my own fault it crashed and i kept getting the 'you must format this drive to use it' error, I might have caused it by accidentally unplugging out the drive without safely stopping it

Anyway I ran a checkdisk or similar command from command prompt as found on another forum, that repaired it so it is now visible as a drive in my computer.

Luckily it still knows how much data is on it because in my computer it says 200gb used blah blah blah

But the problem is that when I go into the drive there are no files on it bar one which has no extention, program to open it with, and has no properties

Please can somebody help me out, I need to recover the files

I have tried numerous data recovery programs but they didint come up with the proper files just portions etc

Recuva - Undelete, Unerase, File and Disk Recovery - Free Download

Thanks very much guys I appreciate the help

Ill try both links