Hmmm, I wouldn't go that far. If a computer is fried, well, its fried. No start, no bells, whistles, dongs, dings, no shifting etc.
Let'* try this...disconnect the POSITIVE side battery cable, and short it to the GROUND terminal on the battery. Go check your mailbox, come back, reconnect the POSITIVE cable back to the battery. Restart the car, go for a drive. See if you can duplicate the same thing again.