What can cause 1 click when key is turned and all electrical cuts and computer completely resets everything?

Optima red top battery installed. Also I know usually one click could indicate starter is bad but don't understand why all the electrical is cutting out. Pull the key hit the alarm unlock button again an sometimes the same thing happens sometimes it fires right up. Also all the gauges freeze in Place as well when electrical cuts out. It's almost as if someone was unhooking the battery as I am starting it. Runs fine when started.