10' acadia periodically can not start the car no power, battery good

What is your question?

the car will start run fine, turn it off, go back to start it and there is no power to anything, dash is black/no lights, can't remove the key move the shifter. Open the hood and let it close and everything comes an you can start the car. when the power comes back on it makes a humming sound under the hood

What makes this problem better or worse?

there isn't anything

How long has your 2010 GMC Acadia had this problem?

1 1/2 weeks