![]() The machine has never been dissassembled before. Theres no liquid damage or any other signs of anything to suggest otherwise. Has anyone any ideas what it could be ? Why are the fans running at take off speed the second laptop powers on? Why are the fans not detected on machine by software? Why a change in hard drive type allows machine to boot off the power key and then not? Put the original sata back in and no boot unless, power key held down then magsafe plugged in. I removed the original 250gb apple sata and tried a ssd in place and it booted from the power key alone. All fan software resulted in 'no fans detected on this machine', therefore no control option to lower fan speeds. I installed TG Pro fan software, tried smc fan control and mac fan control software. All the same on all 3 osx versions, fans running high. ![]() When it finally booted up, fans roaring away again. And wouldn't boot if the magsafe was connected before the power button pressed. The laptop wouldn't boot with just the battery on its own either. The laptop then, wouldn't boot unless i held down the power button and plugged in the magsafe (battery removed). Repasted the 3 chips, reseated the heat sink and reassembed. Now then, I removed the rear case, hoovered out all the dust and fluff. The problem is both fans are roaring away at full speed the second I press the power button. Picked up a clean, late 2008 mbp 15.4", 2.4ghz intel core duo, 4gb ram, 250gb sata drive,
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