Greetings. Trying to figure out why hard drive just goes from bottom to top over and over, not stopping to attempt read in between. It is a Toshiba 1 TB hard drive that came out of my Moms All in One HP. I even bought a second hard drive same model as a donor and put the old platter in it, but it still does the same thing. Bounces back and forth from outer edge to hub then back over and over. Any suggestions? Also I should mention I see no signs of physical flaws on the platter.