This just happened to me yesterday. Started with remote start, put key in to engage and only the back windows worked. Fronts were dead. Turn jeep off then back on and everything was ok. Very odd. Try disconnecting you negative cable on the battery and give it a few then reconnect.
2012 JKU Rubicon
Silver | 4.10 Gears | Hard Top | Connectivity | Remote Start
-Faulty driver side head replaced at 23,000 miles
-New AB head possibly faulty and being replaced at 29,000 miles