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Bernd Beyer
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MBP does not boot despite the chime and white screen
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I try to fix a macbook pro A1278 2.4GHz. When starting it you can hear the chime, the screen gets white/grey. Nothing else happens. You have to push the start button for 5 seconds if you want to switch it off.
The keys do not cause any reaction. Except the start button.
What i have been trying until now:
- Several resets, pram and so on
- safe mode
- single mode
- verbose mode
- changed the ram
- changed the HDD Lion and Sow L
- target mode
- recovery mode
- dvd-boot
- aht-boot
- pushing trackpad-button to eject the dvd
- external keyboard / mouse
Nothing happens. But there is the chime and the bright screen. Has anybody got any idea? That would be great.
Changing the logicboard has finally solved the Problem.
Bernd Beyer,