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Macbook 13" Late 2009 No Display and Beeps a Few Times

I had this same problem about 6 months ago.  To resolve it I reseated the RAM or switched the slot I can't remember exactly.  Now the same computer is back again with the same problem.  Beeps three times pauses beeps again then solid power light but no video.

I have resolve the issue by removing the power adapter and unplugging the battery then holding down the power button for a few seconds.  Reconnect everything and all is well.

My question is what is causing this?

Verified disk and permissions just because.

Thanks in advance.

OS is 10.8.5
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1namyln
Asked:
1namyln
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1 Solution
 
strungCommented:
Bad RAM or RAM slots. See:

http://support.apple.com/kb/ht1547
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1namylnAuthor Commented:
Its really more like 4 beeps but the fourth is just a tad longer.  I attempted to run the Apple Hardware Test but while trying to do so the problem occurred again.
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1namylnAuthor Commented:
Hmmm.  I see now that one of the sticks has slipped out just a tad.  Very touchy.  Still trying to access the hardware test.
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strungCommented:
According to:  http://computers.tutsplus.com/tutorials/help-my-mac-wont-turn-on--mac-44524

"4 Beeps: No Good Boot Images
This dreaded “4 beep” POST error is thrown when the computer cannot read the software information properly from the hard-drive, usually the result of a hard-drive crash. However, that isn’t always the case. Try to boot your computer into Safe Mode. If you can, it’s probably a corrupt update. Backup your data and reinstall OS X."
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strungCommented:
Will it boot properly from the Recovery Partition if you boot while holding down command-R?
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1namylnAuthor Commented:
Any attempt to press keys relating to diagnostic at start-up re-aggravate the problem.  This is with new RAM too.

https://www.youtube.com/watch?v=Eg56fvxd23I
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strungCommented:
Sounds like a hardware problem. I suggest you make a genius bar appointment if there is one near you.
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1namylnAuthor Commented:
A hardware problem that isn't the RAM.  Sounds like its time for a motherboard.
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strungCommented:
Might be the RAM slots.
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1namylnAuthor Commented:
^Which is repaired by replacing the motherboard, right?
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strungCommented:
Yes.
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