if you've got everything connected correctly, and it's not even seeing a usb device, then either the usb converter kit you got doesn't work, or, MUCH more likely your drive is toast. sorry
I've had mine like 5 years. It was like $5 and I've always been able to see the drive, if the drive was working at all.
One last thing to try, some usb ports on laptops are weird and have power settings you can set in the bios. Maybe your usb adapter doesn't like your laptop. Try it on a desktop at a friends house and see what happens.