Steady "beep" after installing more memory--why?

An Apple technician recently advised me to increase my iMac's memory. He suggested that I get 4 GB to what he must have thought was only 1 GB in there; when I opened the slots, I discovered there were two memory cards: a 1 GB and a 2GB. Thus my upgrade added only 1 GB to the system. I did swap out the existing 2 GB for the new one (a Kingston Apple DDR2).


I inserted the cards, replaced the cover, but when I plug the unit in, the screen won't turn on. Instead, I hear a steady "beep" every few seconds.


How can I correct this?


Thank you!

iMac, Mac OS X (10.6.4)

Posted on Feb 8, 2012 5:15 PM

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Posted on Feb 8, 2012 5:18 PM

Take them out and put them back in again, if that changes nothing put them in one at a time and check each one, if that fails put the original chips back in and return the new ones.


These are the error 'beeps' and their meaning.


1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable

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Question marked as Top-ranking reply

Feb 8, 2012 5:18 PM in response to Cinephile8

Take them out and put them back in again, if that changes nothing put them in one at a time and check each one, if that fails put the original chips back in and return the new ones.


These are the error 'beeps' and their meaning.


1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable

Feb 8, 2012 5:29 PM in response to Cinephile8

If your RAM is Kingston's Value RAM that could also be a problem. That RAM tends to have a lot of problems with earlier iMacs. First I would check to see if it have fully seated. You can do this by pressing very firmly with both thumbs until you fill the RAM click into place. Then restart, if it works OK then you are OK if not then I would return the RAM and buy higher quality products. I would recommend both www.macsales.com (OWC) and Crucial as vendors. Of course make sure the RAM is the exact specifications Apple recommends for your iMac.

Feb 8, 2012 6:59 PM in response to Cinephile8

Cinephile8 wrote:


Is there any other way to get the data above that you requested without my being able to turn the unit on?

Lets deal with chips first I think, they do require some force, maybe more than you are applying, stick with the original combination and once they are inserted as far as you can, change your grip and push each chip firmly, it will have a small but perceptible 'end'. Keep everything straight as you push, no flexing please.

Feb 8, 2012 8:13 PM in response to Cinephile8

Cinephile8 wrote:


OH MY GOSH, IT WORKED!!!! CSOUND1, YOU'RE A GENIUS!


I followed your directions exactly, and I did feel the chips go in a little deeper. A very small distance, but that made the difference between contact and no contact.


I'm afraid all of my on-and-off attempts may have stripped the little screw that holds the plate in. Does the plate have to be completely flush against the bottom?


I'm now going to try the new cards. Is there any reason to swap a new 2GB card (the one I just bought) for the old one that came with the iMac?

Try the screw again, it should work. Try the new cards, you can't put them in to deep and you won't hurt the machine using your hands to insert them.

Feb 8, 2012 5:28 PM in response to Cinephile8

Additionally, if the problem persists, please post the specs of your model Mac to determine what the maximum RAM is the computer can address. Except for one model (which I used to have) where the maximum was 3 GB, most prefer having even numbers (i.e. 2 x 2 GB or 2 x 4 GB, etc). But, to figure that out, we need to have the specs including model idenifier number (something like 8,2, 11,3, etc).

Feb 8, 2012 6:11 PM in response to Cinephile8

Thank you all for your help. I don't know how much RAM this model can handle, but here are the specs listed on the bottom of the monitor: Model #A1224. IC 432 BRCM1022. iMac 20"/2.0 GHz/1GB/250 GB/SD/AP/BT. Does this give you any useful information with which to help me?


I don't hear a "click" when I insert the cards, even when I use the old ones in there. I pushed them in as far as they can go; I don't want to push extremely hard. Do I have to have the small oblong back panel screwed in before I turn on the machine? If so, it's going to take a while to test each card separately.


Your help is GREATLY appreciated, and if you have any more suggestions, I welcome them.

Feb 8, 2012 6:22 PM in response to Cinephile8

What we need to tell which iMac you have is by what is in the first page of System Profiler (Applications - Utilities - System Profiler). It will look similar to the shot below. DO NOT include your serial number please.

User uploaded file


When you insert the RAM yes the cover should be installed before turning on the machine. As for the "click" you will feel that more than hear it.

Feb 8, 2012 7:25 PM in response to Cinephile8

OH MY GOSH, IT WORKED!!!! CSOUND1, YOU'RE A GENIUS!


I followed your directions exactly, and I did feel the chips go in a little deeper. A very small distance, but that made the difference between contact and no contact.


I'm afraid all of my on-and-off attempts may have stripped the little screw that holds the plate in. Does the plate have to be completely flush against the bottom?


I'm now going to try the new cards. Is there any reason to swap a new 2GB card (the one I just bought) for the old one that came with the iMac?

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Steady "beep" after installing more memory--why?

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