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2.26 or 2.4 GHz / White plastic unibody enclosure

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Screen is dark after OS X boots

It works okay, but when i want to reboot it - it becomes when it has to show my desktop. When i take out RAM and put it back everything works again... Why?

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Failing backlight - to confirm or deny connect to an external monitor - it should appear normal when your display is black. If it's black too you have a GPU/VGC logic board problem.

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