Can't connect to jetson nano 2gb

Hi, I’m from Windows 8.1, and can’t find the jetson as a connected device, I don’t have even that menu as I see here: Getting Started With Jetson Nano Developer Kit | NVIDIA Developer. I also tried from ubuntu as it is written on the link above, but at the point of sudo screen /dev/ttyACM0 115200 I only got a black terminal, without anything on it. How can I connect to my Jetson dev kit?