HELP! Ram not recognised

I have a similar problem to the 1 GB Problem RAM. I just bought my Powerbook G4 about a week ago, and it came with 512 MB of RAM. It worked just fine until I installed OS X 10.4.2. After this, the computer started displaying only 256 RAM and showing an error message at the hardware diagnosis: DIMM1/J31 Failed. I dont know what to do, it used to work fine but it seems something happened after the update. I have downgraded back to 10.4, but it didnt help. What could be going on here?

That's very interesting. Ironically, I just got off the phone with my service provider after taking in a 2.0 DP PM that ran for less than 24 hours with the same symptoms as yours. Except my RAM read as half the amount they really were (ei: 256 were reading as 128, 512 as 256), then the upgraded 512 sticks failed, then the factory RAM failed and it just altogether died.
The techie reinstalled the factory RAM and it suddenly started working again, and reading the RAM correctly. That said, he still thinks it's a failing logic board, not the RAM. This sounds all too much like your PB, Guillermo!
I think the installation of Tiger is nothing more than a coincidence. Print off and take this thread with you as proof to your service people and ask for a new logic board to be installed. It may take a little longer to get your PB back, but at least the problem has been taken care of.
Good luck!
~Sheri

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Samsung ram not recognised?

I have the later revision of the G4 aluminium with 1400x960 screen. Currently it has two 512 MB Samsung DDR2 sodimm modules in it. I replaced these with identical but larger modules (two 1GB Samsumg modules). I get either one or three beeps (no ram/not recognised) depending on the configurations I try. The new ram specs are:
Samsung 1GB PC5300 SO-DIMM Notebook Memory
M470T2864EH3-CE6 0839
Brand: Samsung
Memory Size: 1024MB DDR2
Memory Speed: 667MHz PC5300 200 pin
ECC-register: No
Memory Type: DDR2
CONDITION: Brand New
Any ideas? Thanks.

First off, I will say good choice on the Samsung, since they are OEM suppliers for Apple, and I only use their RAM in my machines. I find them completely compatible and never had problems. Now, as to why you are having a problem, that is odd. I do know that not all Samsung modules may be compatible... it has to do with the model number / part no.
The other reason you may have could be the lower RAM slot problem? Just a thought.
Second, people will tell you that you are using the wrong RAM and that it should be PC4200, but the PC5300 is known to work as well and is fully compatible so that is not the reason for the incompatibility. Crucial lists it on their website as compatible, and at one point, Apple had that part available as an upgrade option on their website (online store) for people who wanted to upgrade the RAM in their DLSD PowerBooks. I also confirmed this when I bought two sticks of PC5300 Samsung RAM pulled from a MacBook and sold by Other World Computing (www.macsales.com) in their clearance section and it worked like a charm in my PowerBook.
If I had the RAM on hand, I'd give you the exact part no., but I've since parted with my trusty 15-incher and upgraded to a unibody MacBook Pro. But me having a photographic memory of sorts (hey there's a pun there!), the part no. you have listed doesn't look familiar to me. Where did you get your RAM?

Added new RAM - now old RAM not recognised

I've seen several posts where people have had problems with new ram not being recognised, but my problem is this: Following advice from http://manuals.info.apple.com/en/MacProMemoryDIMMDIY.pdf and http://homepage.mac.com/tribe3/.Pictures/MemConfig.jpg, I added 2x1GB Crucial ram to my MacPro today. I put the new sticks on the top riser where the factory-fitted 2x512MB sticks were, and put the 512's in corresponding slots on bottom riser. Now System Profiler shows this:
DIMM Riser A/DIMM 1:
Size: 1 GB
Type: DDR2 FB-DIMM
Speed: 667 MHz
Status: OK
DIMM Riser A/DIMM 2:
Size: 1 GB
Type: DDR2 FB-DIMM
Speed: 667 MHz
Status: OK
DIMM Riser A/DIMM 3 & DIMM4:
Size: Empty
Type: Empty
Speed: Empty
Status: Empty
DIMM Riser B/DIMM 1, DIMM 2, DIMM3 & DIMM4:
Size: Empty
Type: Empty
Speed: Empty
Status: Empty
Not sure how to proceed with this, and I don't enjoy the "thrill" of opening up the Mac so I'd welcome suggestions at this point. In particular, is it a good idea to zap the PRAM at this point? Is there any way of checking if Riser B is defective?
Thanks in anticipation
Jim

OK- I think I'll just go with it as it is for now. I'll have a chance at the weekend to hammer it with Photoshop and see how it copes. I ran Lightroom this afternoon, and it really was much faster than previous to the upgrade. I'll time its performance in PS with a Photomerge of 24-shots @ 10.1 megapixels each. If it copes with that, and I get the sort of performance boost I'd expect, I'll leave Memtest for now.
BTW - your statements "Memtest is a better choice" and " AHT is good for finding hardware compatibility issues and sometimes finds things (in 30 minutes) that no amount of Memtest would" seem to contradict. Or am I misunderstanding?
Thanks again for your help
Jim

Help- windows not recognising Ipod shuffle first installation

What do I do?
I tried following the steps but it failed in the formatting. Now windows is not recognising it so I can restore it to factory settings.
Can someone give me a step by step guide what to do. The help section is awful confusing and the chatt section is saying I bought by suffle in jan not yesterday.
Currently i have it plug in with me in the net cafe and the light is green.

Windows will not recognise my ipod shuffle, I have
tried reinstalling it, when I try playing music it
just clicks.
I still have I Tunes, just cannot connect the Ipod to
update. I have had it for four months, I am afraid
it may be a fault with the ipod, any ideas? The pop
up says windows does not recognise the USB device,
try reconnecting it, or replace device ! Help would
be appreciated please.
Did you ever get an answer? My shuffle is not being recognized by windows either.

HELP - iPOD NOT RECOGNISED (CORRUPTED)

My 5th gen. iPod Video is not recognised when I plug it into my computer. The cable and eveything else is fine, I have reinstalled iTunes, restarted etc etc and no joy. I cannot get into the bit to restore to factory settings. Can anyone help me do this? Or any other suggestions? Thank you xx

Thought it was fixed =[

4GB of RAM not recognised - mid 08 MBP

Hi,
I currently have a mid 2008 macbook pro 2.4 Ghz running 10.5. I've recently started using a lot more memory intensive programs so I decided to upgrade from apples 2x 1G sticks for 2x 2G sticks from crucial.
Ive used crucial before with no problems, but after installation my laptop wouldnt start, black screen and unresponsive. Thankfully, i hadnt fried anything, and after a long time switching and mixing apples and crucials memory modules around, i discovered that both of my crucial sticks are working fine, but not together.
My laptop will run:
2x 1G
1G + 2G
2G +1G
but not 2x 2G or 1x 2G.
I personally cant make any sense of this, especially after looking up support articles. Supposedly, my laptop should run the 4G without a problem, and equally, it shouldnt just be unresponsive when it doent like the RAM installed. Powered on with no ram, it does beeps and flashes like it should, but with 4G which seems to pass the POST as there are no beeps, the screen should go grey apparently - and it doesnt.
I dont want to take it to apple just yet as 3rd party hardware is involved, just to turn up for them to tell me the first thing to do is to send the ram back...
Finally, a bit of context - Laptop is out of warranty (believe me, through no fault of my own), has had its Motherboard replaced last month, and also has issues with the backlighting tubes in the screen not warming up correctly. No idea if this could be relevant.
Thanks in advance for any help,
Dan

Ok, I found a lot on crucials support website as well about people experiencing exactly the same problem.
Solution is to return the modules, but specifically ask for a different chip configuration or something to that effect when you ring them for a replacement. However several people have done this and still experienced the same problems.
So, i've decided to keep one module and return the other and go with 3gb and that's working out fine. If I was going to keep this laptop I probably would have went to the hassle of returning both and trying to get 4gb installed but i've had the motherboard replaced yet again so Im considering selling it on anyway. 3rd logic board in as many months
Thanks for your help

Help - iMac not recognising speakers

Hi All,
I hope this is posted in the right place, if not my applogies.
I've got a 21" iMac from 2009. I've tried to hook up some speakers today (old Sony speakers from my PC) and the iMac doesn't recognise when they are plugged in to the Line Out port - however when I plug them in the headphone port they work fine…
How do I get the iMac to recognise the speakers through the Line Out port? Is there any difference between plugging them in to the Line Out port and just plugging them in to the headphone port?
They worked fine on the PC and I'm puzzled…
Thanks in advance for any help,
Adam

I believe that the port on the back of your iMac that you think is "Line-Out" is actually an "Audio in / optical digital audio in" port.
Therefore there is no sound coming out of it.
There is no reason why you shouldn't be totally happy using the Headphone jack for your Sony speakers.
Arch

HELP ipod not recognised on PC

Help My Ipod does not show up on my PC. It does not dingdong when you plug it in. I have tried another ipod I have got ang that still picks up on the PC. I have tried restoring the Ipod, I have reinstalled Itunes, and I have checked the drivers on the PC and it does not show up there either???
can you help please. Shaun

I tried a few things suggested and nothing worked. I always get the message "USB Device Not Recognized". And no matter what I do!
During the process I also found out that one of my thumb drives has the same issue. I tried other USB ports and the same. It is just these two devices that have this issue. I recently did a Windows update but don't know if that can have something to do with it. Before they both worked perfectly fine. I tried the thumb drive on another PC and it worked fine. So what ever is going on is very strange.
Also, while researching this board I found many others who had the same issue. There were very many views but very few replies, and if then from people like me. The few suggestions that were out there did not fix the issue. Sadly!
The question that I have is, "what is Apple doing to help?"

2008 Mac Pro - Ram not recognised - Fix?

Hi,
Have a 2008 Mac Pro and its only recognising the RAM on one of two the risers, I've pulled it out, checked and put back in but still no joy,
any ideas - is it RAM or the riser which has (probably) gone bad?
Thanks

Not privy to how much and make or whatnot but I would check with each pair.
The rules though for where and how are important.
Generally FBDIMMs do that they failed and use your vendor's lifetime warranty.
2008's with 8-core 3GHz is rare. It says "MacPro3,1" and talking 800MHz DDR2.

RAM upgrade not recognised

Dear All,
I recently embarked upon upgrading by aging iBoook G4 with built in 256 RAM.
I followed crucial's advice re compatibility and alas on fitting the chip it does not recognise the
SDRAM module!
According to the manual the memory slot can accept the follow spec module:
DDR SO-DIMM
1.25 inch or smaller
128 256 512 MB or 1 GB
200 pin
PC2100 DDR 266 Type RAM
Crucial supplied me with a faster version PC2700 which they say should be compatible. Is there a way of making my iBook recognise this module? It appears not to have happened automatically. Should I send it back?
What to do?!? Stuck on OS X 10.3.9 ain't much fun!
Yours frustrated,
HR

It is recognised!
Either wasn't pushing it home far enough or resetting P-RAM helped?
Cheers.

I recently connected my new ipad to my itunes, but now itunes will not recognise my ipod classic, and 50gig of music has gone. ipad connects ok but no longer ipod which has been there for two years! help!!!

I recently connected my new ipad to my itunes, but now itunes will not recognise my ipod classic, and 50gig of music has gone. ipad connects ok but no longer ipod which has been there for two years! help!!!

What happens when the iPod is plugged in? anything? any errors?
Why is 50GB of music gone? All music should exist on the computer. Only a fool would rely on a single device which could easily be lost or stolen to store their content on.

I have recently got a new windows lap top and transfered by itunes library to it successfully. i cannot however sync downloads to my ipod classic and my lap top is not recognising the ipod at all. Please help ! Thank you.

I have recently changed lap tops and moved my itunes library successfully.
However I cannot now synce my ipod classic with the new windows pc.
The lap top is not recognising the ipod.
I have spoken to apple and they think its a settings issue on my pc ? I have fully deleted and then reinstalled itunes .
can any one help ? This should be easy to resolve but appears to be a common issue when looking on the web.
Thank you

Here is what worked for me:
My usb hub, being usb2, was too fast. I moved the wire to a usb port directory on my pc. That is a usb1 port which is slow enough to run your snyc.

I have attempted to upgrade os4 to os7. icloud has taken an old expiered email address for which i do not know the password. It will not recognise my current email and password with itunes. Any help appreciated

I have attempted to upgrade os4 to os7. At the end, it threw an error that i had to turn off "Find my iphone" on my phone, which seems to be impossible at that stage as i could not access beyond the upgrade screen.
I thin chose to set up as new iphone, but icloud has taken an old expired email address for which i do not know the password. icloud will not recognise my current itunes email and password, so i now have os7 but am unable to restore from my itunes back up.
Desperately need help please... Any help appreciated
Thankyou

If you don't know your password, don't know your security questions and don't have a rescue address or don't receive a reset email, you should contact AppleCare who will initially try to assist you with a reset email or if unsuccessful will pass you to the security team to reset your security questions for you.
If you are in a region that doesn't have international telephone support try contacting Apple through iTunes Store Support.

My ipod touch just shows the charge symbol on the screen and i checked whether there is a problem in the charger but it works perfectly on my iphone 4 and when my ipod is connected to the computer itunes is not recognising my device pls help me

my ipod touch just shows the charge symbol on the screen and i checked whether there is a problem in the charger but it works perfectly on my iphone 4 and when my ipod is connected to the computer itunes is not recognising my device pls help me

tmplHi pranoop,
If you are having an issue with your iPod touch not being recognized by iTunes when connected to your Windows computer, I would suggest that you troubleshoot using the steps in this article -
iPhone, iPad, or iPod not recognized in iTunes for Windows - Apple Support
Thanks for using Apple Support Communities.
Sincerely,
Brett L

My new ipod touch is not recognised in itunes or Windows 7 on any of my computers/laptops. I've followed the online advice and still no luck. Help much appreciated!

My new ipod touch is not recognised in itunes or Windows 7 on any of my computers/laptops. I've followed the online advice and still no luck. Help much appreciated!

Does it charge?
Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Try another cable
- Look at the dock connector on the iPod. Look for abnormalities like bent or corroded contacts, cracked or broken plastic.
- Make an appointment at the Genus Bar of an Apple store.
Apple Retail Store - Genius Bar

HELP! Ram not recognised

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