I'm helping a friend out with his car. Out of nowhere it wouldn't start, no turn over just dead, all the dash lights, power window/doors, radio work when you turn the key but when you turn it to start nothing, no noise even with a jump. I've swapped battery, alternator, starter relay, pulled the starter and had tested. solenoid and starter tested fine. Swapped the ignition switch, checked fuses... the works. Still doing the same thing. I've checked the terminals and theirs no crazy corrosion. I'm pulling my hair out trying to be a nice guy and helping a friend out now I need help. Thank you for your time