during boot screen pixelates then startup freezes
during bootup, the startup screen pixelates depending on angle of screen. then the startup process freezes. only way to try again is to unplug and remove battery. sometimes the screen does not come on and the macbook beeps (until you take the battery out)
it feels like something pinches or is shorted in the hinge area. the back of the lower case (at left hinge) has a crack in it (probably daughter dropped or pushed screen back too far)
what do i try to replace?