IMac G3 600 memory upgrade issue

I have just acquired a Snow iMac 600mhz, currently using 256mb RAM (one stick). I want to install a 512mb stick in the open slot, but the computer won't start with it installed. I have upgraded the Firmware to 4.1.9, and the RAM is known good in another computer. It was purchased from OWC, and I have confirmed that the specs of the RAM match the specs set forth by Apple. I don't know what else I can do. I have attempted rudimentary things, like trying to reset the PRAM (not successful, since when restarting after the RAM install, it only beeps/bongs and sits there). I am looking for alternative reasons/solutions for this problem.
I hope someone can help me.
Thanks!

Logical question. It was very well seated in the slot. It is PC100 CL2 168-pin 3.3v 64 bit SDRAM. I assure you it is the correct RAM. And I tried it in another iMac--a friend's 500mhz Snow iMac. It worked.
As stated above, I confirmed that the firmware is up to date. I am uncertain of what else I can do. If I install just the 512 stick, all I get at startup is that little beep--no HD spinup, nothing. If I leave the existing 256 meg stick in the "first" slot, and put the 512 in the "second" slot, I get the startup sound, and then nothing else--no HD spinup, nothing. I don't know what other recourse I have. I want to make this work, but wanting something doesn't make it happen...

Similar Messages

HP Probook 6450b Memory upgrade issue

Hi All,
I appear to be having a strange issue trying to upgrade the memory in a HP 6450b probook (i5-480m & ATI card). The laptop came with 2gb of p/n sps 598856-002 which is 1333mhz 1.5v ram with the manufacturer being ramaxel. I ordered and fitted a couple of 4gb kingston sticks
http://h30094.www3.hp.com/product/sku/10473659/mfg_partno/KTH-X3BS/4G
Fitted them and all seemed to be well as the OS (win 7 32bit pro) showed the stick as 8gb recognised and 3gb usable, the bios also reports 8gb as well. However the moment a 64 bit OS (Linux or Windows) is attempted to be run the laptop just crashes or hangs
I previously attempted this upgrade with two sticks of crucial memory but had exactly the same problem, so thinking the crucial memory was the issue I returned them to the supplier and ordered the kingstons instead.
I have seen very similar issue noted here:
http://www.tomshardware.co.uk/forum/328016-30-memory-upgrade-probook
and
http://superuser.com/questions/580512/hp-probook-6450b-not-booting-after-memory-upgrade
My gut instinct suggests this laptop may be very fussy about the memory chips, it may have to be a 16 chip 4gb stick as opposed to 8 chip 4gb sticks.
Any thoughts and help on the matter would be greatly appreciated.
Thanks
This question was solved.
View Solution.

You're very welcome.
Glad the lower density memory worked for you, and now you know what to look for the next time you plan on upgrading the memory on any HP notebook made in the last 8 years or so.

Macbook Pro late 2008 Memory upgrade Issue

Dear Gurus,
I have a late 2008 15" Macbook Pro 2.4 Ghz with 2 GB 1066 MHz DDR3 installed, I just brought a pair of corsair (2*4GB) DDR3 (CMSO4GX3M2A1333C9) memory upgrade and installed it in my macbook pro. I'm running OS-X Lion 10.7.1 before the upgrade now in About This Mac menu show that I have 8 GB 1333 MHz DDR3 and everything seem to be ok only when I shutdown and power up again the boot time seem to take longer than it is with previous 2GB memory module installed, it took almost 2 minutes from the power button pushed untill my macbook display the login screen. Question: Is the Ram upgrade is OK or I need to return the Ram and get the 1066 Mhz to replace my 2 Gb Ram. How can my mac report that I have 8GB 1333 MHz DDR3 Ram while the system only at 1066 Mhz bus
Best regards,

RAM will clock back to match the system bus as long as it's otherwise compatible. Reporting utilities tend to read the RAMs design speed.
It it works, ignore it.
As for this part of your question:
only when I shutdown and power up again the boot time seem to take longer than it is with previous 2GB memory module installed, it took almost 2 minutes from the power button pushed untill my macbook display the login screen.
that's normal. The OS does a "power-in self test" or "POST" at startup that includes RAM checking. The more RAM installed, the longer the test takes. You quadrupled you RAM, so the increase in start time does not surprise me.

16GB Memory upgrade issue

Hello,
I just did a memory upgrade on my macbook pro 15-inch early 2011.
After I insert the 2 x 8GB memory cards, macbook was started OK.
Several minutes later I noticed on USB port and audio are not working anymore.
If I insert back the 2 x 2GB original memory cards, all works fine.
Do anyone have some advice on this?
Thanks in advance.
Ricardo.

Early 2011 models were tested with the best available RAM at the time ... 4 GB sticks. Even last fall 8 GB sticks were $1000 for a pair. Now it is inexpensive enough for us common-folk to buy it. But that "it seems to work" only underscores the need for fully compatible RAM.
As to correct specs, just let crucial or macsales guide you by model/year. They try very hard to be Mac-compatible and only sell what they are willing to stand behind.

15-inch Mid-2010 memory upgrade issues

Hi,
I have a 15-inch mid-2010 MBP running Mountain Lion, that I upgraded from 4 to 8 Gb of memory in Sept. 2012. The memory i purchased was a 2x4 gb set of Corsair Value rated at 1333 MHz. The upgrade went smooth, and i did not have any problems for a few months.
Then late in december or early in january, I had a few Kernel Panics. I didn't think too much of it, as I was busy with exams, and thought it might be a software issue or something, maybe related to VMware Fusion. The KP's started getting a bit more frequent, and suddenly one day the machine wouldn't boot at all, it just KP's at the Apple logo and then goes in a loop. I now suspected a memory problem, as my experience tells me that this is a usual cause of KP's.
I started fiddling with the memory sticks, and determined that one of the blocks would boot, so i went to the place i bought the set and talked to them. They agreed that the one block was probably faulty, and replaced my memory with a 2x4 Gb set of Corsair Mac Memory. This is 1066 MHz CL7, and should be compatible with MB,MBP and iMac, according to the packaging. The problem is that the machine will not boot with this memory either. It just goes for the same loop and KP's at the Apple logo. I can't even get this to boot with one stick in the machine, so it's arguably worse.
The machine works well with the original memory, It's been a rock solid main machine with 4Gb of ram for about a month now.
I tried PRAM and SMC reset to no avail. I tried booting into boot camp with the new memory, but it just never seems to load Windows. This also works with the old memory.
I'm a bit lost as to what i should try next. I suspect it's a problem with the Logic Board, i just don't see how, seeing as it used to work with 8 Gb, and that it still works with 4 Gb.
Any suggestions would be appreciated

So, i've played around with things a bit more. 4 gigs of ram is still rock solid. I've had the memory in a friends computer, an HP PC, where it works just fine.
Also, the computer starts up fine in fail safe mode if i hold down shift during boot, but that's no way to live.
I should probably have mentioned in my first post that I have replaced my optical drive with a 64 gb SSD that i boot OS X from. Since Windows does not start up either, and i've had that part of the setup for about two years, I wouldn't think that is the problem.
The computer has been running 15 passes of Rember this night, and was still running when i got up, so it's clearly not entirely broken.
Any suggestions?

24" Intel iMac 3 Gig memory upgrade

I currenlty have (2) 1 gig memory modules in my two slots for a total of 2 Gig. I want to upgrade to 3 Gig. When my 2 gig module arrives, I know I need to remove one of the (1) gig modules to make room. Does it matter which slot I use for the new 2 gig card, top or bottom?
Thanks
24" iMac, "17 iMac, Mac Pro Dual-Core Tower Mac OS X (10.4.8)

You have posted in the iPod Nano forums. You will probably find more help in the Mac forums.
http://discussions.apple.com/forum.jspa?forumID=1112

MS-6183 Memory Upgrade Issues

Help, I am upgrading a PC for a friend and have replaced the standard 128Mb PC100 ram with a matched pair of 256Mb PC133 DIMMs but the PC refuses to see any more than 128Mb. I have flashed the BIOS to 1.7 without any difference.
Is there a setting in the BIOS or Jumper that restricts the memory available?
Cheers.

So each one alone is 128MB and also both of them together are 128MB ?
Try clearing the CMOS then.

Can I Use DDR3 RAM for iMac 7,1 Memory Upgrade?

I'm sorry if this is a silly quesyion but I cannot find an answer anywhere so I thought I would ask here. My iMac (mid 2007) has the following specs:
Model Name:          iMac
Model Identifier:          iMac7,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          2.4 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          4 MB
Memory:          1 GB
Bus Speed:          800 MHz
Boot ROM Version:          IM71.007A.B03
SMC Version (system):          1.20f4
Yesterday, from the Apple Store, I ordered an Apple Memory Module 4GB 1333MHz DDR3 (PC3-10600) - 2x2GB. In the Apple Store it said that this was compatible with all computers shown so I assumed it would be okay with my mid 2007.
From further reading it seems that I will not be able to use this memory and that I should have purchsed 4GB 667MHz DDR2 instead. Is this correct? Will I be able to use the DDR3 that I have purchased or will I need to get the DDR2?
I tried to cancel the order but it was too late. I should have researched it properly first.
Cheers for any advice.
TJ

You will not be able to use the ram you ordered. You need to return it and purchase ram that is
200-pin PC2-5300 (667MHz) DDR2 SO-DIMM. Also, don't purchase ram from the Apple store, they overcharge for it. Look to order ram from a vendor such as Crucial or OWC.

HP Pavilion p7-1414 memory upgrade issues

I just purchased a HP Pavilion p7-1414 desktop. This system has an AMD A8 processor and supports up to 32gb ram. I recently purchased a new 8GB stick of Kingston KHX16C10B1R/8 1600MHZ DDR3 NON-ECC HYPER X BLUE. This memory will only clock 1333MHZ no matter what slot I install it in. This machine has 4-memory expansion slots. The machine runs fine but the memory will not clock up to advertised speed.
Any input is appreciated. The memory in brand new. I also have 2 new 4MB sticks of Kingston ddr3 1600MHZ memory and they both clock fine @ 1600MHZ.
Thanks!

It seems likely that the HPSA isn't reading the information correctly.
If the BIOS shows the correct reading and passes the memory test, I would say that it's operating normally.

Imac Isight 20" Memory upgrade Third Party?

Would like to add a 2gb stick any suggestions on thirdparty sellers with reliable/guaranteed compatability besides owc?

Since Micron's website shows their 2GB's at the "sampling" stage [expect the website isn't necessarily up to date on that page], I'd watch crucial.com on a daily basis for them.

MSI 6178 Memory Upgrade Issue

Hi
I've recently tried installing a single stick of 128Mb PC133 RAM on to my 6178 but it only detects it as 64Mb. All the chips are on one side of the stick.
I was hoping to flash my AMI BIOS (ver 1.9) with a Award 2.1 BIOS, but i keep getting a "The program files part number does not match with you system" message.
What am I doing wrong? Am i going about this the right way?
Any help would be most appreciated.
Cheers
Jigsaw

I have the same problem with MS 6163by master. it is very difficult to find a sdram that will work good on our old pcs. I tryed so many different rams... now i have 512MB working ram. I was hope to get more but...without sucess. If you look in your book of motherboard you will find the information which rams are supported and how many chisps it must have attached on it.
Good luck !

Upgrade from 10.2 to 10.4 on iMac G3 600 MHz ? OS install disk ejects.

I am trying to help my friend with this one. I gave her my old iMac G3 600 MHz. it has 384 MB memory and currently has Mac OS 10.2.8 which I had installed previously. Now she has a new iPod nano and so the iMac needs the OS system upgraded to be able to use the iPod. I have the install discs for Mac OS 10.4 from an iMac G5 however when I simply put the install disk(s) into the drive slot, after about 20 seconds or so it ejects. Do I need a different install disk?? Cause I don't think I have another 10.4 disk anywhere. I really want her to be able to use her iPod Nano on her iMac! If I can do something on the iMac to be able to upgrade it I would really appreciate any suggestions or help. Thank you.

Thank you. I might try that with the iMac G4 I am using right now.
Are there any other suggestions??
This is random, but I have an extra iMac G4 which has been unused for a while. if I could get Tiger onto it, does anybody think it would be worth it to let her use the G4 instead and go through with transferring all her data? I guess what I'm asking if I get this iMac G4 to work would there be a significant difference running Tiger on it compared to the iMac G3 she already has?
I hope I've made sense. I really want my friend to have a decent computer with Tiger on it so she can use her iPod Nano.
Thanks for all your help.

Memory upgrade on iMac G3 700, help with system crashes

I tried to do a memory upgrade on my iMac, so I bought two kingston 256 MB PC133 modules, but none will work, the system starts, but hangs in about two minutes after loading the desktop. I went back to use the older memory module wich is an spectek, but I need the upgrade, any ideas?
Thanks!
FedericoMG.
Ps: Sorry about my english... I'm from Argentina... :-P

Hi Federicomg
The iMac 700 G3 should have been supplied with 1 stick of 256mb ram. However which is the correct type i am not sure as the Apple specifications for this model state PC100 whereas my iMac G3 700 graphite was supplied with 256 MB PC133-333 SDRAM
http://support.apple.com/specs/imac/iMacSummer2001.html
Apple profiler from my iMac this is the original supplied RAM from Apple:-
DIMM0/J13: Size: 256 MB
Type: SDRAM
Speed: PC133-333
1) I would re-instal the original ram and open system profiler to see what type the ram is.
2) Keeping the original stick in place add another stick of the new ram and look again in profiler to see if its recognised and again try the second stick to see if there's a problem with one of the sticks.
I am currently running my iMac with a small upgrade of RAM and the additional RAM is 128MB of PC100 and i have noticed the performance improvement since adding the PC100 so it's working and i have suffered no ill effects doing this..
paul..

Memory upgrade on iMac bought in 12/2007

Hi everybody,
I bought an Imac 3 and 1/2 years ago. I wanted to upgrade it to Mac OsX Lion, but since it has on 1 MB of memory it's impossible as Mac OsX Lion requires at least 2MB. Do you know if it would be possible to add some memory?
Thnk you.
Pierre

Hi Federicomg
The iMac 700 G3 should have been supplied with 1 stick of 256mb ram. However which is the correct type i am not sure as the Apple specifications for this model state PC100 whereas my iMac G3 700 graphite was supplied with 256 MB PC133-333 SDRAM
http://support.apple.com/specs/imac/iMacSummer2001.html
Apple profiler from my iMac this is the original supplied RAM from Apple:-
DIMM0/J13: Size: 256 MB
Type: SDRAM
Speed: PC133-333
1) I would re-instal the original ram and open system profiler to see what type the ram is.
2) Keeping the original stick in place add another stick of the new ram and look again in profiler to see if its recognised and again try the second stick to see if there's a problem with one of the sticks.
I am currently running my iMac with a small upgrade of RAM and the additional RAM is 128MB of PC100 and i have noticed the performance improvement since adding the PC100 so it's working and i have suffered no ill effects doing this..
paul..

Memory upgrade on a early 2008 iMac

Hi, I have a early 2008 24" iMac with 2 GB 800 MHz DDR2 SDRAM.
I have read conflicting information here vs. Apple support site and would just like some advise and possibly answers from someone who has my computer that has done a succesful upgrade. I would obviously like to upgrade as high as I can. Apple says the Max I can have is 4 GB, but I have read that the real size is 6 GB. Which is it?
Also, does anyone know of a specifc Ram that wont break the bank but is still good?
Thanks!

Many people on these forums speak well of the following suppliers.
Can't tell where you come from but ...
In North America contact OWC …        Upgrade Apple iMac Memory
In Europe contact Crucial.com …       RAM Memory Upgrade
Both companies have facilities to guide you and will recommend the correct memory package to meet whatever needs you describe to them.
There may be benefits buying from your own geographical location insofar as Shipping charges, Local sales taxes and Exchange rates. Check out the basic memory costs and do your sums.
Guide to required RAM.    Lookup Mac Specs By Serial Number, Order, Model & EMC Number, Model ID @ EveryMac.com
I think you can use 6GB on that machine.
Message was edited by: seventy one

IMac G3 600 memory upgrade issue

Similar Messages

Maybe you are looking for