Alright, here's my thoughts about what's goin on here.
1. Stop obsessing over your ECU light
2. reikoshea has told you what could be causing that 3 times and you fail to understand what he's talkin about.
3. This is an electrical problem.
4. That means you need to use a volt meter and check circuits.
5. The main relay is under the dash by your left knee and is responsible for turning on your ECU and Fuel pump when you turn the Key to the ON position.
6. That COULD be why your ECU light isn't blinking once.
6a. Or your ecu could be shot
6b. Or the LED on the board simply doesn't work, rare but happens.
7. The causes listed in #6 is what we're trying to nail down.
8. If you have another ECU handy, throw it in and let us know if the light blinks.
9. If you don't have another, then do what we're sayin to do to find out if the main relay simply isn't coming on.
10. If your starter clicks but can't turn the car over, your battery is dead. Charge it. If it doesn't hold a charge, replace it.
Now read #5 again.
Then #4.
Now use the volt meter and check for 12v+ at one of the 2 or 3 wires at the Fuel Pump when you immediately turn the key to the ON position.