After spending a month doing everything I could think of to fix this problem including unpluging and replugging the drive and all sorts of other things today I was taking the drive out in order to plug it into my dad's computer tonight and test it there when it slipped out of my hands and fell on the floor.

So I decided to plug the drive back in to see if it had been damaged and right away it started working good as new, I have no idea why. I have plugged it into the same cables several times but that didn't fix the problem before so I can only conclude that dropping the drive on the floor somehow fixed it???!

I have no idea why it is working now but I will take it.

Thanks for all of your help.