Driver station problem

[team2491]

We're relatively new to FIRST, so maybe our problem is stupid, but here it is: a few days ago, us electrical/programming people left the robot after a good day. At that point, we had a simple program to pretty much match motor speeds to joystick position. Coming back the next day, we found it didn't work- the motors didn't turn when the joysticks were pressed. We pinged everything, and everything but the driver station itself responded; after a couple hours of deliberation, we have come for help. Our driver station appears to be working fine, but it's displaying Battery: No comms and isn't talking to either our driver station router or the computer itself. Haven't gotten a ping returned from it under any conditions since yesterday. Thanks!