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Model番号 A1225 / Mid 2007とEarly 2008 / 2.4, 2.8もしくは3.06 GHz Core 2 Duoプロセッサ

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Beeps at startup, 3 x short, 3 x long, 3 x short

Hi folks,

my iMac doesn´t start right, as soon as i hit the power button there comes a Beep, 3 x short, 3 x long, 3 x short. As far as i know it should be something about the Ram or Ram Slot. Since i tried a few different Rams and nothing changed i suppose its actually the Bank/Slot itself.

What can i do?

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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.

さんによる

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.

さんによる

would this work on a macbook pro? I have this problem on a Macbook pro medio 2010?

さんによる

Yes, you could try running the system with one memory module. You may need a new PRAM battery.

さんによる

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.

さんによる

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今あるものを使い続けましょう

オールインワインキットで安く修理して、節約しましょう。

iPhone 修理キットを見る

今あるものを使い続けましょう

オールインワインキットで安く修理して、節約しましょう。

iPhone 修理キットを見る

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Try one RAM stick one at a time in each slot and see if you can identify the bad slot or stick or both. Is the Power on LED flashing?

'UPDATE3/31/17

My answer is incorrect.

See the answer given by onlymyprivatemail

Three long tones, three short tones, three long tones: EFI ROM corruption is detected, and the computer is in EFI ROM recovery mode.

Newer computers automatically recover from a corrupted ROM; when this occurs, a progress bar appears on the screen during ROM recovery mode. Don't disturb your Mac while the ROM recovery takes place. When recovery is complete, your Mac restarts.

If you need to restore the EFI ROM on certain Mac computers produced before 2008, you'll need to use a Firmware Restoration CD to restore the EFI ROM. Search Apple Downloads for the right CD image for your computer.

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No LED flashing, i actually don´t find and see any LED. No matter wich Slot i use, it still beeps.

さんによる

I'm talking about the LED on the front of the machine. Try all the RAM sticks. It IS a RAM problem (slot or stick).

さんによる

Ok, nothing flashes. Since i tried about 3 or 4 different Rams i think it´s the slot itself

さんによる

Are you trying both slots with just one stick? Don't put two sticks in.

さんによる

I just tried the first bank. At first it started beeping, second try went ok and it really started.........

さんによる

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change the pram battery

that should fix the problem

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That's the first thing I tried.

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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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change the battery

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Thomas, I don't know if you got this problem resolved yet, but in case you haven't, maybe this will help: I'm currently trying to diagnose an Intel-based iMac, Mid-2007 2.0 GHz model, which is currently playing the same symptoms as yours is/was--the same error beep sequence, kernel panics, runs sometimes, etc. I managed to get the Mac to run long enough to allow me to install a thorough memory testing utility called Memtest onto its hard drive, which you run in single-user mode at startup. It kept displaying RAM errors, even with known-good RAM boards, so I felt it was likely there was a problem with the RAM-controlling circuitry on the logic board. So, I ordered a replacement logic board. That didn't help. Swapping logic boards with the supplier requires that you first remove the CPU and GPU chips before sending the supposedly bad logic board to them, and installing these chips onto the replacement logic board, so the only remaining part from the Mac I'm working on, that's likely to be the cause of the problems, is the CPU chip (the GPU is unlikely, especially since in these earlier iMac models, it doesn't access the main RAM bank). If you haven't already spent money on this, I'd recommend trying a known-good CPU before you try a logic board--it's cheaper, and with these particular symptoms, more likely to be the CPU. Prior to working on this Mac, I'd never seen a bad CPU cause RAM errors, in 23 years of working on Macs. But the way statistics works, is that a number of other techs have probably seen this problem several times in fewer years, especially with some Intel iMac models, which I suspect were assembled with flaky processor chips that failed after a year or two.

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Please wait to see if your solution resolves your problem before recommending it.

さんによる

mayer: I understand your logic, but as part of the troubleshooting process, it makes sense to recommend trying a known-good CPU before replacing the logic board, since the symptoms between Thomas's iMac and the one I'm working on, are identical, and I've already found that the solution for the Mac I'm working on isn't to replace the logic board. Also, as I pointed out, the cost to buy a replacement CPU, if the person doing the repair doesn't already have access to a known-good one to try, is much less than paying for a logic board replacement.

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This is corrupted EFi bios beep codes. Probably bios get corrupted by some EFi corrupted update.

Unfortunately this EFi Recover discs are not functioning with all models.

Need BIOS dump and BIOS programmer. Where it can be reflashed with the bios file extracted from similar machine.

Apple doesn't publish them.

Regards

www.IT-Solve.net

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Wrong; that's incorrect, as onlymyprivatemail explains.

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I work in a computer repair shop and had an iMac brought it with this same problem. I tried multiple sticks of RAM in both memory banks and nothing was working. I swapped out the internal coin battery and it started booting no problems.

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I talked to a friend who has worked as a Mac repair technician for as long as I can remember. He said he has had reasonable success with this problem by resetting the logicboard. Not sure how this is done but I would imagine that replacing the battery would achieve a similar outcome which is why this has worked. He indicated it hasn't worked in every situation but he has had an 80+% success rate.

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Hi! EFI chipset out of order. Need a new one.

Have a look here:

http://tof.canardpc.com/view/ddbd40e0-49...

I've Soldered a new one (find a reseller on Ebay ^^):

[url="http://tof.canardpc.com/view/b67a3c8d-49...]

Cheap (less than 30$) , quick (less than an hour) and it could work for resetting a forgotted EFI's password

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This is great news Jeremy,

can you possibly point where can I get the EFI chipset?

Thanks in advance.

Apple claims is the firmware update, and I guess that's where that firmware resides.

Thanks in advance.

さんによる

@Alex Hernandez - I think you're throwing out the baby with the bath water here! How about first trying the SMC reset, then using an external bootable drive see if you can boot up under it. If that still fails its time to pull the battery. Replacing the EEPROM (EFI) chip does require having a chip with the firmware already on it and it does need to be registered otherwise you'll have problems running some programs from the App store. It would be the very last thing I would do. I would first just replace the logic board as it would be easier and cheaper, Given the age of this system I do wonder if its worth the effort.

さんによる

Problem Solved! (macbook pro mid 2010)

I did a "super upgrade" last Christmas,

ram to 16gb

250 SSD

1TB HDD for storage (replacing the optical drive).

Everything went fine until the issue showed up, of course.

I removed the 16gb ram and put back the original 4gb. Also, I disconnected battery and battery meter.

Removed my extra 1TB hdd and replace it with the original DVDRW since I had no place where to put the optical drive, I just decided to put it back in. Connected battery cables and turned system on.... NO ISSUES!

System is now running smoothly. Upgraded to El Capitan and no issues.

Will post back if returning to my "super upgrade" again will cause trouble...

stay tuned!

さんによる

Hi! Bought it From ebay, seller called biosdepot.

Not expensive , was 30$ for me but you'll need to replace it your self.

Seller will ask you serial number and exact logicboard number for programming. No problem with app store

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Had the same alert. Sorted it by cleaning around ram and removing/refitting them. Worked. Computer started up - after it had kept getting stuck after restarting for an update. Now the cursor highlight flickers(

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I have 2 macs that do the same thing a the beep codes posted above, i have reseted PRAM and cleaned and tested ram slots/cards still nothing works.

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Alright so I have a 2009 MacBook unibody and basically when you power it on it has 3 short 3 long 3 short (NOT 3 long 3 short 3 long) idk what to do I have 4gb of ram installed and it’s apple branded oem and I already tried resetting using keyboard combinations on startup and it doesn’t help

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Thomas さん、ありがとうございました!
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