You can call 866-511-6285 between 8AM-6PM Central to talk to one of our techs. They'll want to do some troubleshooting to see if they can fix what's wrong quicker than going through the RMA process. If you're unable to fix it together, they can process the RMA.
Generally, finding help for roboRIO and FIRST works best by starting at www.ni.com/frc and clicking the "Need Help?" roboRIO to get all of the help resources. That includes the forums and the phone