I had 500 GB Marshall disk in my laptop with windows 8. I had a problem with startup. I tried install a new windows in another drive, but it was always stuck while copying files. Now i am using a desktop and i tried to move data from laptop hard drive to desktop, but the hard disk responded very slow. I managed to move some data in some days and formatted those drives. But 1 drive does not open or respond. How can i recover its data. I also tried to delete other partotions but disk management does not work