Rsstoring Root Directory or Partion from a non-accessable Disk drive (a non boot disk)

I was attempting to remove a date and power cable from a drive from my system. I powered the system down and failed to check whether Windows had completely shut down and apparently removed the data cable before it did a full shut down.

When I powered the system back up, realizing what I had done and re-cabled the disk, I received an error message saying that the drive needed to be formatted. The system saw the drive but could not read from it.  Realizing that I needed to recover files from the disk ASAP, I used the program Power Data Recovery and was able to retrieve most of the files, thank god. However, the program indicated that there was about 15GB of Lost Files out of 160GB. When I look at try to open these files, they appear corrupted.

Two questions;
   1) Is there any better way to recover or repair these lost files?

   2) Is there any way to repair the root directory or partition this drive? It is not a drive the system boots to
       When I run On-Track Date Recover, the program recognizes the disk as "Unidentified "with no
       Drive letter or file structure.  When I examine the drive using the demo version of PTDD Partition Table
       It shoes the following info:

    Partition      Active       Description            Start        Space
    ---------      --------       -------------             -------       -------
                                                                    C   H   S
     1 <G>       No               HPFS/NTFS        0    1   1      190799  

     This is a 200GB western digital drive


Any help on this problem would be greatly appreciated?