Here is a note from the Apple website mentioning specifically about the "3 long beeps, 3 short beeps, 3 long beeps" combo beep tone. I could NOT locate any Apple reference to "3 short beeps, 3 long beeps, 3 short beeps". These two tone combinations are clearly not the same.
"Mac computers: About startup tones
Learn about the different sounds your computer makes when it starts up and what they mean.
Mac computers can produce several sounds when starting up. Your Mac should produce the familiar single tone on start up. If you hear another tone it can indicate problems with your computer.
1 tone, repeating every 5 seconds: This indicates no RAM is installed.
3 successive tones, a 5 second pause (repeating): This indicates RAM does not pass a data intregrity check.
1 long tone while holding down the power button: Indicates an EFI ROM update is in progress on a computer manufactured before 2012.
3 long tones, 3 short tones, 3 long tones: Indicates EFI ROM corruption is detected and the computer is in EFI ROM recovery mode.
Should you need to restore the EFi ROM on certail Mac computers produced before 2008, you'll need to use a recovery CD to restore the EFI ROM. Newer computers automatically recover from a corrupted ROM; when this occurs a progress bar appears on a grey background. Do not disturb the machine while the ROM recovery is taking place. It will restart back into OS X when it restarts. For more infomation on EFI ROMs, see EFI and SMC firmware updates for Intel-based Macs."
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I had this problem with RAM (that came with a MacBook Pro) that a MacBook wouldn't accept. Got this error several times; reseating didn't help; trying one, then the other didn't help. SOLVED thus: finally, I left one of the original sticks in, and one of the new sticks. Worked! Running memtest a dozen times showed it's reliable, so I'm leaving it as is - 3GB up from 2.
из Matthew Elvey
Hi all,
I had same issue and had to chage PRAM battery( button one _2032), open iMac and chagne it, it was fine afetr it.
из Gord
would this work on a macbook pro? I have this problem on a Macbook pro medio 2010?
из Quinten De Wilde
Yes, you could try running the system with one memory module. You may need a new PRAM battery.
из Dan
Ho lo stesso identico problema (9 beeps: 3xshort, 3xlong, 3xshort). Il mio è un iMac 20'' early 2009, intel core 2 duo, 2.66 ghz, 2 gb ram.
Qualcuno può aiutarmi? La soluzione di cambiare la batteria pram è davvero efficace? Mi date conferma?
Vi ringrazio molto.
из dueannidopo
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