I finally contacted the seller of my MP0402H hard drive, and he informed me that I needed to adapt the hard drive pins from my old hard drive to my new hard drive for it to work.
DOES THAT SOUND CORRECT? I am looking at the hard drive, and it appears soddered on. If this is correct, then I need to replace the frame of my old hard drive onto the new hard drive. Sounds a bit technical and scary, but maybe it will work.
Any help would be appreciated.