Engine dies while driving and once while at idle

What is your question?

Driving down the road the engine just dies out of nowhere.I have 2 lights on my dash 1 being check engine (error says o2 sensor) , 2 is my ATTS. Now I don't believe that they are related. When the engine dies my car does'nt have power to the radio, dash or no power to my brakes or power steering. I tryed to pop the clutch while coasting after it dies, nothing happens. I will turn the key to start it again I will get the noise like the car is running and hearing the starter grinding. I try turing the key a few times in about 5 or 10 seconds later, it runs like nothing happened and drive normally.their is no hesitation in the engine or bog when it starts back up. The only thing I can think of is an ignition switch. Any input in this problem will help.