Robot not working

Last weekend team 78A went to the New Hampshire Championship, and during our last match we were hit once(just a tap from another robot) and lost all motion of the robot, we were green all over(controller and cortex) but we could not move at all, the ref unplugged us from the field to see if it was a field issue, but no, can anyone explain what might have happened? Any help would be great thanks.

My first thought is that motor wires got unplugged. If all the Cortex lights were green, then it would probably be something with the Cortex, or else something weird happened because you were plugged into the field. Does the robot work now?

Yes right after the match we were fine it ran without a problem we were hit and everything while running and nothing happened. I just dont want this problem in later events but thanks for the response.