My Macbook Pro ( early 2008 model) died... Simply won't turn on., most of the time... Occasionally it starts up ( maybe one in twenty times if i keep trying). When it doesn't start up you can hear the DVD drive checking and nothing else... I have ruled out the hard drive (have a spare).. Im fairly certain its not the RAM thats causing the issue... But the fact that it sporadically kicks into life confuses me greatly... All i can limit it down to is a hardware issue of some sort... after that - im clueless... has anyone any ideas? Resetting the PRAM or SMC doesnt make a blind bit of difference... I was about to sell it on for parts and let someone else worry about it.. but id rather not do that if the fix turned out to be something very simple. One final thing - I did bring it in to a so-called Apple "Genius". He reckoned it was the logic board... other possible sugesstions ive come across are (a) An issue with the thermal paste for the CPU.. (b) The heatsink not working correctly, or some overheating issues...(altho it fails to start even when idle for weeks which would rule it out).. Should I investigate further or am I about to get into a world of pain.... i couldnt be bothered spending hours and hours trying to fix it. life is too short. suggestions/advice would be greatly appreciated!! cheers.. Dessie.