Hi everyone im new here to the forum and Im desperate

. As listed, I have a 93 intrepid 3.3 and it wont start. I was driving home one day and suddenly all the lights on the dash flashed and the car died. It restarted and ran normal for a few minutes before the exact same thing happened again. Now it still turns over but wont start. There is no fuel pressure in the rail and no spark either. I installed both a new cam and a crank position sensor. I checked all the fuses and relays including the ASD relay in the car and they are all good. I also went to the junk yard and grabbed a computer from a 95 intrepid and I still have no luck. I know the fuel pump is good as I jumped it and its fine. I also pulled apart the column and wiggled the wires leading to the ignition switch and I get nothing. One thing I can note is that when you turn the key to the on position the check engine light does not come on at all most of the time, sometimes it quickly flashes. Also, with the key in the on position the fuel gauge does not move at all. Any ideas? I continue to think computer but not sure I should buy a new one that i cant return yet. The flashing lights I mentioned when the car originally died makes me think of some horrible and hard to find wiring issue. Anyway, if anyone has any ideas Id really appreciate and love to hear them.
Thanks...Nick