I was just walking in my dorm room today. Then I accidentally stepped down on my ibook g4's adapter cable and my g4 fell of to the ground from my desk. I immediately checked it, it doesn't turn on anymore. When push the power button nothing happens. There's no visible damage at the outside of the computer, though it simply doesn't work. Anyone has any idea, what may be the cause for that? Also any way to fix that? Thanks in advance