My passport 1TB ran for more than a year under windows 7,8 and actually 8.1, but suddenly stopped. it loads the drivers but doesn't appear in the explorer. when I start the disk management it indicates that the second disk (my passport) must initialize. but it fails.

it appears in the device windows , just doesn't start (or initialize). I even tried the refrigerator trick, nothing

I've also tried several data recover progs, recuva , testdisk, easyus, wondershare WAC, etc, they all fail to see the external drive.

there must be a program that can go through , any ideas?

thanks, Jim