I've been backing up for over a year and today when turning on my xbox it turns itself on and off twice then flashes red and green. I have a executioner lite chip.
most of the times its due to a loose point or a bad solder...you might have to go check up on it.. im not famailiar with executioner lite chips so u should try looking at a troubleshooting guide... for xenium chips though I know it would be the DO point being loose