Ok I think I had a mistake while trying to install it on the PC...
I installed the software without the CD, from what Ive downloade from here.
At the manual it says not to install the driver when the windows asks for it, so i didnt.
but now when i remember that in London I installed the driver via the windows (which is using the CD) installer i tried to disconnect and reconnect but now when i reconnect it gives like a fast double tune of a hardware being connected to the USB port, and the coputer dont recognize it, although the Green Power light is on.