Macbook Pro's display have vertical lines
My 2008 Macbook Pro's display suddenly have vertical lines and the display changes colors every time the mac either wakes or boots. This started just a few days ago. At first the display goes back to normal but after 3 days it no longer went back to normal and every time I restart the color changes either to red (common), blue (common), green, violet, yellow or orange. Other than the display problem, my machine still works fine though. What could be causing this? Is this a display hardware problem, logic board failure, graphics failure...? I've done some research and there are a lot of cases with different causes such as logic board failure, graphics failure, others even said it was a driver issue that has not been addressed by Apple. I can"t do anything about it for now since I have no clue where to look. But I did some test like connecting to an external display. That one proved that it was a hardware problem cause the external display was okay while the one on the have lines. I also tried booting the Drive Genius and at some point that made the mac display run normal again but after a few hours the lines appear again. I also tried to reset both the PVRAM and and the display (control+shift+eject) but none worked. I hope someone could at least shed some light on this or help me in finding a way to address the problem. Thanks!
MacBook Pro, Mac OS X (10.7.2), Early 2008 Model
