Im hoping someone can help me without going to the apple store, which there are noe currently where i am at. My computer screen will go black all the sudden, i will shut down, and restart but the video is still black but the fan goes on really loud and i cant get it back on for hours and hours. I will get lucky and it will start up and be on for days, with no problems, then all the sudden it happens again. What can i do? Is there is a short in the wires? DO I need to take it to the apple store? Please help me. Thanks!