How to fix a malfunctioning RAM slot?

I tried to upgrade my Mac Mini (late 2012) from 2 x 2GB to 2 x 8GB after ordering the correct Crucial RAM from Amazon, based on user reviews. After my first installtion attempt, I found that the Mac mini would only recognize only one of the 8 GB sticks. The Blank 1 slot was listed as empty when in the system information retrieved via apple menu. So I repeated the installation 3 times but after the third attempt the Mac mini would start and beep and the monitor screen was black. So I reinstalled the old RAM and the Mac mini would beep again after turning it on. Upon closer inspection, I noticed that the top RAM slot wasn't holding the RAM tightly and the left clip plastic piece was little more flexible than the bottom piece. So I removed the RAM and inserted it at 45 degree angle and pressed hard so that it popped in place. Yet the Mac Mini beeps upon start. Even if the top slot is damaged, it doesn't want to run on the bottom RAM slot which seems to work fine. I purchase the Mac Mini in Feb 2013 and just spent over $100 to upgrade the RAM. It's a shame I will have to shell out more to fix it. Any suggestions?

The Mac Mini started with the original RAM after I had sealed the hardline crack with some lactate. The release and hold mechanism for the top slot became stiffer after that. The Crucial RAMs didn't work but I am happy that the mini can start with the original RAMs. There were over 2000 5-star reviews for the Crucial RAM on amazon but the latest reviews are negative suggesting drop inequality or compatibility issues. I am going to return the Crucial RAM and be content with the 4 GB RAM for now.

Similar Messages

How do i get more RAM in my iMac G4 800?

I'd like to expand the RAM on my iMac G4 800. I read a few discussions and am not quite sure what I can do. Here is what I have and what I want to do:
Have: I have a iMac G4 800 with 512 in the J22 slot and 256 in the J20 slot. I am assuming the J20 slot is the one I can make changes to. Is that right?
Want: I'd like to add a 1 GB DRAM and make my memory 1.5 GB. I realize there is some debate about whether this machine can handle over 1 GB of main memory. So, can I do that?
Thanks

Hello and Welcome to Apple Discussions.
I'm afraid there is no debate: 1GB is the maximum on the 800MHz iMac.
Personally I don't believe that going from 768MB to 1GB is cost effective on this older Mac given that you will have to throw out a 256MB module.
On my iMac G4 J20 is the internal "Factory" slot which is difficult to access; this notation may be different on the 800MHz model.
Some tips to improve performance:
Quit Safari often; it suffers serious memory leaks that Apple doesn't seem in a hurry to fix and will gobble up your RAM.
Keep your hard disk nice and empty. Once you fill your hard disk above the 85% level you'll start to get fragmentation and the available space for virtual memory is not there.
Use a system maintenance application like MacJanitor (link).
Quit applications when you're not using them.
Have a look in Macintosh HD > Applications > Utilities > Activity Monitor. How much Free and Inactive RAM do you have? If the processor regularly being tasked to 100%? How many Page Outs do you have?
cheers
mrtotes

Help on how to fix macbook pro 13inch 2010 (cpu 1 caller 0x47f5ad)?

help on how to fix macbook pro 13inch 2010
Hi, I need some peoples help on fixing my laptop. I have a macbook pro 13 inch 2010 model, and it refuses to boot into either osx or windows. Every time I prevoiusly treid to boot into mac osx I got this error "panic (cpu 1 caller 0x47f5ad)". there is an image below. and when I had treid to boot into windows (bootcamp) I got this error "A disk read error occured Press Ctrl+Alt+Del to restart". I have treid to restart the computer and gotten both these errors agian. The strange things is this deosn't always happen, sometimes I don't get any errors, and it just has the apple logo whith the spinning loading thing happening below (I left this for an hour and it still kept spinning, and never loaded). Other times it just show white whith no errors but never loads, sometime it lets me alt to select which os to boot into (nether work), but other times it just freezes and shows a mouse cursor on the white background. it's not consistent.
Most recently it has a flashing folder on a white background. I treid inserting my osx disc and went into disc utility but it doesn't detect my hardrive. It may be a faulty hardrive or sata cable but I dont know (I have links below). I was recently (well for the first time), defragmenting my windows partition, it hit temparatures of 80-85C, and stayed at that for several hours throughout the defragmentation, would this have damaged it?
I have scoured the internet and found many people whith very similar problems to me but none whith the same, and A lot of people saying that if you get the error you should just use a time machine backup, the thing is I don't have a time machine backup. The internal hardrive I am currently using on my laptop is a seagate 640gb 5400rpm (it's not an apple harddrive). every thing else it standard, standard ram and no overclocking, I was running 10.6.8 snow leopard, and windows xp profesional 32bit (split 320gb each, whith about 10gb spare on each parttion).
It would be greatly appreiciated If any one could shed some light on what I should do. I need the laptop working whithin the week (for my tafe work), but If I have to reinstall the OS's and programs it could take a long0I have a lot of programs and that could take a month. not to mention The fact that the hardrive might be completly fine and it's just a faulty sata connection. but then would I still be getting an error if thats all thats wrong?. and if it is just the error is there anyway I can fix it whitout doing a fresh install, there a error reading document blow but I cannot make heads or tails of it. I also have almost no money to afford getting it fixed.
also one last thing, I stupitidely inserted my mac osx disc 95% of the way into my macs slot loading drive when it was powered down (off). when I turned it on it sucked it in fine, but would that have caused any damage to the disc or laptop (I cannot eject the disc to check)
I have images of many of the things I described below. So any suggestions.
I have also posted this on several other websiets if that helps)
Photos
http://www.flickr.com/photos/100089102@N08/
"panic (cpu 1 caller 0x47f5ad)" error issues
http://forums.macrumors.com/showthread.php?t=1177233
http://reviews.cnet.com/8301-13727_7-10344626-263.html?tag=mfiredir
https://discussions.apple.com/thread/3256029?start=0&tstart=0
http://www.mac-forums.com/forums/switcher-hangout/258078-macbook-pro-will-not-st art-up.html
https://discussions.apple.com/thread/3965618?start=0&tstart=0
Hardrive issues
https://discussions.apple.com/thread/4225754?start=0&tstart=0
http://www.mac-forums.com/forums/other-hardware-peripherals/242064-hard-drive-no t-showing-up-disc-utility.html
How to read errors
http://developer.apple.com/library/mac/#technotes/tn2063/_index.html
other websites
http://au.answers.yahoo.com/question/index?qid=20130808212838AAYDeTk
http://forums.macrumors.com/showthread.php?p=17706929#post17706929

The problem may be that your macbook is'nt set to 'mirror image' if you go into settings, onto 'displays' there should be an option within, once youre connected, to 'mirror image' if you check this box, then the problem should be sorted, if not then maybe a dodgy cable or adapter.

MacBook Pro mid 2012 15" - one RAM slot gone bad

Hi,
Has anyone ever had the issue with not working RAM slot? My MacBook Pro mid 2012 (non-retina) suddenly froze and after restart was beeping three times every few seconds. I found out that the beeping signals bad RAM. Bought new chips, and the problem still exists. My mac can now run on one slot with 4GB RAM.
I did check the placement of the chips in the slots, i also checked one slot at a time, and one of them has gone broken.
Any ideas on how to make it run again? or if it is possible to replace the slots?
Brgds
Marek
MacBook Pro 2,7GHz Intel Core i7 / OSX 10.9.4

The Apple-accepted cure for a dead RAM slot is a new logic board. Unless you ahve AppleCare, that will be an expensive fix.
An Apple service option is the "depot repair." Instead of working on your computer in the Apple Store, they send it to a centralized refurbishment facility where they fix anything they find wrong (except for cosmetic damage and damage from abuse like dropping) for a flat fee of a little over US$300. That is between 30 and 40 percent of the parts and labor charges if Apple installs a new board in an Apple Store. Sometimes they will install an new battery at the depot without increasing the flat fee.
The downside is that it takes about a week; for that level of cost savings, I could do without my computer for a week.
So take it to Apple and ask about a depot repair.
A low-tech and low-cost option is to expand on what you are doing now--using one slot. Although the official RAM limit on your model is 8GB RAM (two 4GB models), your model can actually handle a total of 16GB (two 8GB modules. You can ignore the dead slot and put an 8GB module in the good slot. My 2012 MBP has 8GB RAM and is completely happy running Mavericks.
Be sure to ONLY get the RAM from an Mac-savvy vendor. For over a decade I've bought all our Mac RAM from one supplier. This is their page for an 8GB module for your MBP model:
http://eshop.macsales.com/item/OWC/1600DDR3S8GB/
I would also trust Crucial on this one. For a change they recognize that your model can use more RAM than stated in Apple's outdated specs:
http://www.crucial.com/usa/en/compatible-upgrade-for/Apple/macbook-pro-%2813-inc h-and-15-inch%2C-mid-2012%29

Second RAM slot bad?

Troubling issue with my 24" iMac (late 2008, 3GHz, nVidia 8800).
With both RAM slots loaded, it crashes randomly in the first 15 minutes after boot. Sometimes this is a freeze, others the black "You must restart your computer" message. Regardless, after shutting down, it won't reboot successfully until the RAM has been re-seated (it'll stall at the plain gray screen, before the spinner or the Apple logo show up). Once re-seated, sometimes 2-3 times, it'll decide to boot again, only to suffer the same fate.
Brought it down to the minimum configuration - only the first slot filled. Works fine, rock-solid, runs for weeks without issue. Swap that same stick to the second slot, and we're back to crashing and needing to re-seat the RAM to get it rebooted. I've tried both 1GB sticks that came with the iMac, as well as a couple of 2GB sticks from Crucial - the behavior is the same regardless of the stick(s) being used. (All sticks are known to be good).
I've currently got one of the 2GB sticks in, been running for about a month without issue, but I'd really like to get the machine up to 4GB, so it's about time to get this fixed.
Aside from the testing I've done above, is there anything else I should do prior to setting up a time to drop it off at the local Apple Store for warranty service (still under the 1-year warranty, haven't bought Applecare yet, but planning on it)? Any other tests I should run or documentation I can provide to save both my and the tech's time?

So, it's been a month. Figured I should post an update on how things turned out.
Repaired permissions, backed up to an external drive, booted from it to be sure, and repaired permissions again.
Shut down, removed the backup drive, and decided to give it one more try before calling up the store. Performed the same procedure I've done so many times:
Unplugged the power cable. Let sit for 20 seconds (resets SMC).
Popped out the single 2GB stick from the left slot, seated it in the right slot. Seated the second 2GB stick in the left slot.
Plugged the power cable in.
Booted. Reset PRAM. Came up OK, did not log in. Shut down.
Booted again. Reset PRAM again. Came up OK again. Logged in this time.
From this point on, everything has worked flawlessly, across multiple reboots, for a few weeks now. I've run several memory tests, each of which has passed with flying colors.
I'm not sure exactly what the difference is this time around, but I'm certainly not complaining.

PPC Dual 2.0 Ram/Ram slot problem

Hey there folks. I'm hoping someone has seen this before and can help me out. I've been having problems with RAM. It's a mix of bad ram and what I believe are bad ram slots. I've isolated the bad ram and removed it from the machine. With the good ram I have found that every other slot has a problem. If I put a pair of good ram in the Zero slots, it works fine. If I put them in the next slot they show has having a problem in the hardware test AND if I just let the machine boot, the ram will appear in the hardware profiler, BUT it will only post half its value. The machine will run fine for a bit, but then applications will vaporize, there will be eternal SWODs..etc etc .. making the machine unusable.
I've got a work-around for now. I just use the first and third slots and leave the second and fourth slots empty.
Any ideas on what the problem is? ... How to fix it?
Thanks very much for your input.
Cheers,
Jeff

yeah.. I don't think the Crucial memory will work in those slots either... I haven't tried, but all the ram that seems good and works as a stand-alone pair in the first and third slots, doesn'twork in the second and fourth... I'm much more suspicious of the motherboard/memory slots...

Lower RAM slot damage caused by 3rd party RAM?

I took my 1.33 ghz 15" powerbook G4 in to be repaired this past Friday. The lower RAM slot was not working (as a note, this slot contained the original RAM that came from Apple). Upon noticing that 256 megs I had in there was missing from system profiler, I removed the 3rd party 512 RAM and placed the 256 Apple RAM there, I placed the 512 meg card in the other slot, and then 512 megs were missing when I booted up. Clearly both sticks of RAM worked, the problem was the slot. I took it into Apple.
They called me today to tell me the system was repaired. They also told me something that I don't believe and don't even think is possible: The 3rd party RAM is what caused the problem. The reasons I don't believe this? I have never heard of faulty RAM breaking a RAM slot in my life, it just doesn't work. Also, the RAM worked in there for a long time prior to it not working. I have also heard of a system update which breaks the lower RAM slot, and Apple issuing a recall on a range of powerbooks as a result to replace the motherboard. True, my powerbook is not in the range of serial numbers, but I also know that there are many people who have this problem that are not in the range Apple has recalled.
The RAM was installed free of charge at the store I bought it from (a non-Apple mac store in Los Angeles). It was never removed until I noticed that the RAM was not being detected, and it was the slot, not the RAM that proved defective.
What do you guys think? Could that have legitimately been the problem? Or did Apple just not know what was wrong, fixed the board, and made that up in the hopes of getting me to buy some overpriced Apple RAM?

Hey, whatever mod deleted the reply to this and my subsequent reply to that, why don't you tell me an accurate response? Tell me exactly how working RAM could break the RAM slot it wasn't even plugged into.
Otherwise, Apple is telling a bunch of bull and refusing to admit to a product flaw. Why delete a post speculating on such an issue? All it does is lend credence to the speculation. I believe that it is the case all the more now that you have deleted the posts.

Powerbook G4 15in 1.5GHz Dead Lower Ram Slot

My Powerbook G4 has a bad lower Ram slot, but the problem is intermittant. If I put both 512mb ram in and start up, sometimes I get the 3 beebs and sometimes it will boot and show a full 1gb ram but locks up moments later.
I've been running on 512mb and it is not fun!
I can not afford a new logic board or a new mac. I am a web designer and need my PB for work.
How can Apple not Recall these machines and fix them?

Did the 2 RAM modules come with your Mac? Have you tried swapping the RAM modules to opposite slots and do you get the same failure in that slot? Make sure the modules are securely connected in the slot.
To eliminate RAM modules being the problem, Look at this link: Testing RAM @ http://guides.macrumors.com/Testing_RAM Then download & use Memtest & Ramber.
Do you have an Apple Hardware Test disc (the AHT is on the Install/Restore DVD that came with your Mac)? Running the Apple Hardware Test in Loop Mode is an excellent troubleshooting step for finding intermittent hardware problems. It is especially useful when troubleshooting intermittent kernel panics. If Loop Mode is supported by the version of the Apple Hardware Test you are using, you run the Extended Test in Loop Mode by pressing Control-L before starting the test. Looping On should appear in the right window. Then click the Extended Test button.The test will run continuously until a problem is found. If a problem is found, the test will cease to loop, indicating the problem it found. If the test fails, be sure to write down the exact message associated with the failure.In some cases, RAM problems did not show up until nearly 40 loops, so give it a good run.
 Cheers, Tom

Faulty RAM slot?

My MBP (2010) won’t start up properly; when it turns on the screen doesn't load (the screen is black) and it gives off beeps indicating a RAM error. I took it to the computer tech at my school, and she said that the RAM slot was defective. She said could fix this by removing the RAM slot and placing my RAM in the other available slot.
My questions: is removing a faulty RAM slot feasible? Can the faulty slot be fixed under warranty?
Thanks for your help .

How did this work out? I've just been told that my MBP I bought October 20th, 2010 has bad RAM slots.
Of course, this requires a total logic board replacement for $700!
This machine is less than 14 months old. Used sparingly. I don't understand how this could be.
Anybody have any suggestions?
gm

MBA 11 (2013) pinch zoom does not work after some time, how to fix it ?

Recently I purchased MBA 11 (2013) model ( 4GB ram & 1.3 Ghz dual core). Although I use iPhone 5 & iPad 4 but never used mac. So when I found the track pad is capable of pinch zoom(along with other gesture) I was excited. But later I found after opening few apps (like safari, chrome etc) pinch zoom stop working . I need to restart in order to make it work again. Other gestures works fine just issue with the pinch zoom. Along with this issue I have some other questions as well
1) How to fix this pinch zoom issue?
2) I use eclipse for android development, but when I connect android phone/tablet - os crashes, no idea why?
3) How to uninstall & update apps properly which was downloaded from web (like I installed x-code) ?
4) I want to use mouse (i am comfortable) - I need to know whether right click, wheel, ling click & drag works perfectly.
5) How to back up the os if something goes wrong I can retrieve from there ?

Error 2, 4 (or -4), 6, 40, 1000, 9006
Follow Troubleshooting security software. Often, uninstalling third-party security software will resolve these errors.
There may be third-party software that modifies your default packet size in Windows by inserting a TcpWindowSize entry into your registry. Your default packet size being set incorrectly can cause these errors. Contact the manufacturer of the software that installed the packet size modification for assistance or follow this article by Microsoft: How to reset Internet Protocol (TCP/IP).
Verify that access to ports 80 and 443 are allowed on your network.
Verify that communication to albert.apple.com or photos.apple.com is not blocked by a firewall, or other Internet security setting.
Discard the .ipsw file, open iTunes and attempt to download the update again. See the steps underAdvanced Steps > Rename, move, or delete the iOS software file (.ipsw) below for file locations.
Restore your device while connected to a different network.
Restore using a different computer.
http://support.apple.com/kb/TS3694#error6

Messages on my MacBook Air won't send messages over iMessage. Anyone know how to fix this?

In preferences, under accounts, it claims that my Apple iD is hooked up to messages, including my phone number and email address...yet it isn't sending messages they always fail. Does anyone know how to fix this problem? It would be a great help.

Read this whole message before doing anything.
Back up all data.
Quit Messages if it’s running.
Step 1
Hold down the option key and select
Go ▹ Library
from the Finder menu bar. Move the following items from the Library folder to the Trash (either may not exist):
Caches/com.apple.Messages
Caches/com.apple.imfoundation.IMRemoteURLConnectionAgent
Leave the Library folder open. Log out and log back in. Try Messages again. If it works now, stop here. Close the Library folder.
Step 2
If you still have problems, quit Messages again. Go back to the Finder and move the following item from the open Library folder to the Desktop:
Messages
Note: you are not moving the Messages application. You’re moving a folder named “Messages.”
Test. If Messages now works, delete the Messages folder on the Desktop. Otherwise, quit Messages again. Put back the folder you moved, overwriting the newer one that may have been created in its place, and continue.
Step 3
In the Preferences subfolder, there may be several files having names that begin with "com.apple.iChat". Move them all to the Desktop. There may also be a file with the name "com.apple.imagent.plist". Move that to the Trash.
Also in the Preferences folder, there's a subfolder named "ByHost". Open it and do the same thing.
Log out and log back in. Test again. This time Messages should perform normally, but your settings will be lost. You may be able to put back some of the files you moved to the Desktop in this step. Relaunch and test after each one. Eventually you should find one or more that causes Messages to malfunction. Delete those files and recreate whatever settings they contained.
If the issue is still not resolved, quit Messages again and put all the items you moved to the Desktop back where they were. You don’t need to replace the items you moved to the Trash. Stop here and post again.
If you later decide that you don’t like the results of steps 2 and 3, you can undo them completely by quitting Messages and restoring the items you deleted in those steps from your backup.

Where do i find the second ram slot on a t43 thinkpad

i believe ram might be my issue causing my t43 to freeze moving the mouse pointer with the track pointer helps get things working i bought a new 1gb ram and installed it in the ram port since then i have been able to run sluggish applications more smoothly but after a while of using these applications up to an hour the t43 freezes using the track point put some life back in to the machine (enough to close the application) when i dont have anything running except the internet it runs fine i believe the t43 has some sort of second ram slot since in the system it now shows as 1.5gb of ram and not 1gb
should the t43 have a second ram slot how easy is it to get at i don't want to accidentally break something

Welcome to the forum!
The second RAM slot is under the keyboard. Check the HMM for removal instructions:
http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-58791
Hope this helps.
Cheers,
George
In daily use: R60F, R500F, T61, T410
Collecting dust: T60
Enjoying retirement: A31p, T42p,
Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W
Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.

Ram slots on a G-5

How do ram slots J-43 and J44 relate to the numbered slots inside the machine 1-4 upper and lower on a G-5?

If you're sure the RAM is good, try the Hair Dryer trick...
http://discussions.apple.com/message.jspa?messageID=13240047#13240047
https://discussions.apple.com/message/15223603#15223603
https://discussions.apple.com/message/15499912#15499912
https://discussions.apple.com/message/15613068#15613068
https://discussions.apple.com/thread/3270112
https://discussions.apple.com/message/16053892#16053892
It can show on any G5, and even many other computers & electronic devices of the period.
http://www.macintouch.com/reliability/pmg5.html
http://lowendmac.com/ppc/power-macintosh-g5.html

RAM slot failure on a Equium P300-16T

Hi, Ive got a RAM slot failure on a Equium p300-16T. I have tested both RAM modules and there in perfect working order. RAM slot 1 works and laptop boots successfully but as soon as RAM module inputed into RAM slot 2 no boot.
My frustration comes from when i began a warranty repair on Friday night through the website and it refused to accept it stating that the server had timed out. Unfortunately this timing out seem to happen every time i went to finish the warranty claim. And to my dismay my Serial number is no longer available on the website due to the warranty running out today (2nd of August).
Is there anything i can do?
Kind Regards
Ian Watt

What size RAM are you installing?
The system is capable of 2GB Max in total, so if you are installing RAM above 2GB, booting will/may fail.
You may be able to install a 2GB Module in Slot A, but it will probably be unstable and cause intermittent BSOD's. Or not boot at all. (not recommended)
I believe your laptop has the Santa Rosa chipset, which requires RAM in at least Slot A.
If you install RAM in Slot B only, it wont boot.
So basically to get the most out of the system, you should have a 1GB Module in each slot, which is how it comes from the factory if the specs found in google are correct.

When I connect my Mac Mini 2011 with Lion to a TV via HDMI and an earphone cable is plugged in, it´s not possible to choose sound out via hdmi, as opposed to connection via minidisplay port. Anybody knows how to fix this?

When I connect my Mac Mini 2011 with Lion to a TV via HDMI and an earphone cable is plugged in, it´s not possible to choose sound out via hdmi, as opposed to connection via the minidisplay port. Anybody knows how to fix this?

Was just on the phone with Apple about this.
The solution was as follows for me anyway...
Go to your Finder
Choose the Go Menu
Choose Computer
Choose your Macintosh Hard Drive
Choose your "Library" Folder
Choose the "Preferences" Folder
There should be a folder called "Audio"
Move that whole folder to the trash
Empty the Trash
Restart from the Apple Menu
When you are back up and running;
     Choose System Preferences from the Apple Menu
     Choose Sound
      In the output tab you should now be able to make the HDMI "Sticky"
      Enjoy your sound over HDMI and no more dirty knees or broken backs unplugging the desktop speakers!
Mac Mini 2011 2.5Ghz 8 GB of RAM - Planar 17" VGA via display port adapter and Samsung 26" LCD TV via HDMI

How to fix a malfunctioning RAM slot?

Similar Messages

Maybe you are looking for