drone starts and falling out

Help.

My drone is starting oke

I push on take of of my tablet and the wings will turn around all 4 for just a second of 3 and dan the connection to my tablet is lost.

The drone is resetting?

Any body a idea what it is? I'm testing now with a adapter and no battery. A adapter where i can set the volt it is testen on 10 11 12 13 volt evry thing is the same problem.