Ultan :
This problem is not yet solved !!
Help / suggestions still needed, thanks
Well, seeing as how the device will not power on, then it may just be the cable. Try picking up a spare cable and using it. If it still doesn't work then it is most likely the drive and you can return the cable.
That's the only thing I can think of.
Just out of curiosity, does the drive show up in device manager?
Start>Computer>Right Click>Manage>Storage