Car wont start after overheat

I have an 02 bmw 325ci with the 2.5 inline 6. A couple days ago the car overheated in the red for about 2 miles at highway speeds before I could get out of traffic. When I got off the ramp the car died and would not restart. Here is what I have tried.
-unhooked batter for 30 mins to reset computer.
-pulled plugs to check for antifreeze.
-checked oil for foaming or antifreeze.
-fuel pump comes on.
engine turns over and sounds healthy and when I checked for spark there was none. Is there something in the computer that would shutdown the ignition during an overheat. I checked fuses associated with anything engine or computer and they are good. Any ideas?