Hi, I have searched the web but I find no clue to this problem: My MBP 17'' mid 2009 doesn't boot, when it is cold (cold room). I manage to restart it, if I heat it up with a hair-dryer. Then I can initiate a boot, that avorts. Doing this several times and going each time a little bit further in the booting process, the mbp finally boots completely and is then working for hours without problems. Does anyone have an idea what could be the problem and how to fix it???