I have a MacBook Pro about 5-6 years old (silver keyboard) and it randomly shuts off. Today I took it to the apple store in Spain ( I'm from USA but living in Spain ). And they connected it to an Ethernet cable and did some type of hardware test on it. Everything came back with a green check next to it, except for the very last ram looking picture. It came back with I think a yellow x on it. The man said it was probably the logic board and they want 469 ($608) to fix it. Here's the thing though, a few years ago, I installed a bigger hard drive and updated the ram. That was about 2-3 years ago and I've had no problems since. I should also say, that one time I dropped my computer and it landed on the power connector, which caused a little dent in the power connector, but the connector still charges and that was at least 3 years ago. So the big question is, do you all think its the logic board? Or do you think it is something to do with a ram? Would a faulty ram cause it just to turn off ? Or does that sound more like a logic board? I love my computer and I really feel I don't need a new one (although I wish apple would come out with a MacBook Air 15" retina display, bluray player, with hdmi hook ups, ahhhh, I'll keep dreaming though). Thanks in advance. And the taxes to repair the computer will be 21%! Taxes in Spain are unbelievable! Thanks guys and gals.