What to do if your Mac beeps three times at startup
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2009 C2D 27" iMac won't accept RAM upgrade, 3 beeps | MacRumors Forums
This is an iMac g3, and when I power it on, it just makes 4 beeps and nothing more (no image, but I can hear the HDD and the fan) Any ideas
SOLVED: Beeping sound after upgrading RAM. The old RAM work fine. - MacBook Pro 13" Unibody Early 2011 - iFixit
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SOLVED: Getting three Beeps, Not RAM error - MacBook Pro 15" Unibody Late 2011 - iFixit
iMac Three Beeps! | MacRumors Forums
