I moved my 2008 MacBook Pro 15 with me to Costa Rica in late 2008. Recently the video card (NVIDA?) went bonkers. The Apple Hardware Test said it was solely the video card. I ran Tech Tool Pro and it also agreed the problem was the video card. Apple offered a special 4 year warranty on those video cards because of a defect. I took the unit to the authorized repairer in C.R and they kept it 2 weeks. They now say it is not just the video card but the logic board,...