I know that there are posts regarding this issue and I have read most of them but I wanted some feedback from those who have actually had a similar problem. I have an Aluminum Macbook Pro and this weekend it started exhibiting problematic behavior. On Friday the machine would not boot at all... well it had the fans going and the light on the front of it was lit but that was all. I googled and turned the machine upside down and put a pillow on it and by Saturday it booted and worked for a few hours...long enough for me to use time machine to create a current back up... and then after I put it to sleep the monitor wouldn't wake up... when I pressed keys on the keyboard the CAPS LOCK would illuminate but nothing else would happen. On Sunday the machine reverted to not working at all for the first half of the day but a few hours later booted up like there was no problem. Today I am typing on the machine and there seems to be no problems except that the fans are running full blast even though all that is open is Safari for this website. Ultimately my question is how do I know if this is the graphics issue or if this is a logic board issue. My next question is how difficult will it be to get Apple to make the repair if it is the graphics (ie haggling). My last question is if it is a logic board issue I have read on some of these forums about a flat rate depot repair. How do I get that? I am planning to get a new macbook pro anyway but I am not ready to give up on a machine that I have only had for two years. Any advice would be appreciated.