It sounds like a flaky connection. Is this your boot drive or backup drive?
backup drive. Tried several different usb cables that all work fine on my other computer.
Not sure if this is one or two problems. 1) recognizing the drive and b) when I try to access any files on it, it shuts off or disapears on the computer. IN either case the computer keeps finding it and then slowly recognizes it, and then it drops out.