When you plug the cable in, and look in your Device Manager, do you see an unknown device?
The computer makes no sound at all when I insert the cable. No device seen in the device manager.
When the USB connector is in some certain angles in the USB port the LED starts flashing once a second.
After waiting 15 minutes I got an "error installing drivers", tried updating the drivers and windows stated "latest drivers already installed".
The latest drivers where standard windows drivers from 2006...
Tried with 2 other computers, no signs on the computer at all of any new devices connected.
Tried both without installing any drivers prior to connecting the cable and also tried installing the FTDI drivers before plugging in..
Feels more and more like a faulty cable/hardware