Electrical gone haywire and car won't start!!!!!

mommasuds

Thirty minutes after driving my car I went to go somewhere and put the key in and nothing.....except the screen where the nav system is is flickering grey and black.....making a weird noise like the panic button was hit but it isn't horn sound it is just a humming sound in the same pattern as panic horn......little red dot alarm indicator flashing along with all the other indicator lights. Then they quit then they do it again everytime I try to turn on ignition. My car is not working at all and I have no idea what happened. It is almost like it has shut down for some kind of security reason??/?Someone help please!!!