Just fixed my 750gb drive !! My first purchase of the ca 42 cable was a dud, then got another.. had 5 wires, but did not need external power like others said. Just connected the tx/rx to the hdd and executed the commands on hyperterminal. I forgot to reset the power of the hdd before running the user format command.. and was anxiously waiting for half an hour.. while nothing happened! Scared the hell out of me.. finally reset the power of the hdd and then it worked just fine. Thanks for this topic! Did read some comments on drives failing later, so will backup each and everything!