so my MacBook starts up 1 in 10 tries, all other times it gives the kernel panic error. When it does start up it stays on fine and does everything. I changed the hard drive, changed the ram, reinstalled the osx reset the pram etc still does it. But it's only on start up. I have to restart it like 10 times and then it starts ok. I only have 1 partition, so no windows installed. I ran the apple extensive hardware test of the install cd and no problems found. Anyone got any other suggestions before I have to try changing the logic board( could that be the problem ?) It's a core 2 duo 2.0 late 2006 model. I found other threads on this topic and tried all those suggestions to no avail .