Car won't start and no electricity or power at all




This has occured a few times in the past, but those times after 30 seconds the entire cars system reset and my clock spun all the way around.
This time no reset of system. No power anywhere, but I just checked today and my OBD2 scan gauge is receiving power as it did not last night. Still no power throughout the vehicle though.
Any thoughts?




the battery terminal I shook it really hard then I heard a spark. it is on tight but the jiggle gave power back. will reseat the terminal when I get home


