Here’s my issue. I have an external Mator 200Gb firewire hard drive. It won’t power up at all. I took it out of its case and hooked it up to my computer as an internal. WHen I have it hooked up to the computer the computer won’t power up. When I take it out the computer powers up fine. How can this b? Might this external hard drive that is now an internal have an electrical issue my computer can “see” and therefore won’t start?