Over the holiday we overloaded our fridge and it quickly stopped cooling. This is even with the fridge set to the coolest setting. We pulled the fridge out and noticed that some parts on the back are frozen over. We let it defrost and plugged the refrigerator back in and it is still not working. We are unsure what the next step is. Additionally, there are no unusual noises. It is a GE refrigerator. Thank you.