Robot connection with computer

So my robot’s “game” led in the vex cortex’s micro controller would not turn on with the “robot” led indicator so it can communicate with the computer ,what can I do to make it light up?

Make sure that the orange cord that is usb to usb is fully plugged in and tight in both the brain and the computer itself.

Also, are you using the cord or the vexnets, that would be nice to know.

I’m using a usb a-to-a cord and I did fully plugged it in both micro controller and computer.

I can use a Vexnet 2.0 but i don’t know how to use it or upgrade it.