I have the early 2008 Macbook Pro with the Nividia issues, I got 7 good years out of this thing so I am not complaining but I fear that the logic board is dying. Yesterday after playing a Youtube video the screen had purple highlights at various points and the purple images started flashing, it stopped, I was able to move the tracpad cursor but unable to click anything, manually shut it off, it restarted fine but after using it for multiple hours last night and a few hours today the same thing happened again while using safari. If indeed this thing is is dying, when I buy a new Macbook Pro how do I migrate all of my hard drive from the old one to the new one? I just saved a new Time Machine backup, can I simply plug in the external hard drive to the new Macbook and use migration assistant? When Apple stopped supporting Snow Leopard I upgraded to Mavericks, should I try to upgrade to Yosemite, will that make the transition easier or will it not matter? Finally, does anybody have any thoughts as to other possible explanations for the computer seizing after the screen gains these purple effects? Thanks for your help.