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원문 게시자: mister790 ,

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According to Apple, three beeps at startup mean "no good banks," which I believe means bad RAM.  Or I've seen other folks on other websites suggest that maybe it could mean the RAM is just badly seated -- you might try removing and reinstalling your RAM chips?  Here's the Apple page describing the beeps:  http://support.apple.com/kb/HT1547

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