Ok so I´ve got a macbook pro that is out of warranty and just installed a new screen. The install itself went fine and everything seems fine at startup, I see the apple icon and everything looks great. But once snow leopard boots up the I am getting horizontal lines flickering everywhere and I cannot see anything on the screen. I´ve seen similar posts about flickering lines, but nothing like this where they only show up after bootup. There must be a way to fix this... apple software update says my video driver is up to date. I tried messing with some basic settings on display settings, but no luck. Can anyone help me with an explanation for this??