My Windows 7 PC an’t see My Passport 1TB External. It also can’t be seen by my MacBook Pro, my iMac or my Mac Air! When I first plugged it into my MacBook Pro to offload some of the hard drive there, it told me it was not readable and after a few tries (and getting the same error msg), I clicked on ignore. Now it isn’t even visible on any of my computers. If only I could see it, I would reformat it, but I can’t even see it to do that!
The drive is spinning and the power LED is illuminated (and I can feel it running). I’ve tried two different connectors and both provide power to the drive to spin and illumnate the LED.