Thank you for contacting us about your Easy Transfer Cable. I’m sorry you are having troubles getting it to work on your Windows 8 machine.
Could you try reversing the cable end-for-end (plug the side that was in the Win 8 computer into the Win 7 computer) and see if the same troubles start happening on the Windows 7 machine? That would indicate a bad cable, and we will send you a tested replacement right away.
If that doesn’t happen, there may be a driver issue in the Windows 8 machine. We have a troubleshooting tool that helps us find out what is going on in situations like this. Could you plug the original side of the cable back into the Win 8 computer, then go to this page and following the instructions there:
Be sure to send the resulting file directly to us at firstname.lastname@example.org and put the ticket #63903 in the subject line.