Memtest and Memory Slots

I have been running memtest on my system as I'm fine tuning it and was experiencing tons of errors.
I've been diligently reading the boards for advice and began adjusting voltage, timings etc, until I realized one thing I hadn't tried--putting my second stick of memory in slot 3. In the sticky Unoffical Neo Guide, its mentioned and crossed out for additional testing so I had originally igonored this info.
Bottom line is, once I switched, I went to zero errors, with Auto settings at 2,3,2,6, not the 2,4,2,6 that Mushkin recommends for my memory.
I know this has been mentioned many times on the boards when troubleshooting, but start with a single memory stick, then add the second, but try both slots if you're having errors, my mobo and memory like slot 3 much better.

Here is the response I got from MSI support :
"Please install only 1 pic of memory to test it first. I will recommend you to install the memorys on DIMM 1 and 3, it will led the memorys run in Dual Channel. It may increase the performance.
I think you may also need to change the memory timming in BIOS according to the spec of your memory.
If problem presists, please apply for an RMA and send back themotherboard. We can repair/replace it if it is within warranty. Thanks. "

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I need to upgrade memory slots on my Mac mid 2010 up to 4 GB module which is currently 2GB with two different 1GB memory slots.Is it compatible and would like to know about the cost?

I need to upgrade memory slots on my Mac mid 2010 up to 4 GB module which is currently 2GB with two different 1GB memory slots.Is it compatible and would like to know about the cost?

this sub forum is about running windows on macs maybe you should try
https://discussions.apple.com/community/notebooks/macbook

Do I have a bad memory slot and what to do about it.

About 3 weeks ago when I came down to my computer, intel imac purchased may 2006, in the morning the screen was black and power button was lit, keyboard did not work and the computer would not wake up from sleep. Rebooted and the power light would come one, no chime or screen power up, and the keyboard would not respond (ie caps lock key would light up). Tried multiple reboots and pulling everything connected out but nothing worked. Next on the torubleshooting list was to remove the ram. With both chips removed, 1gb and 512mb, I would get the flashing powerlight when starting up. I placed back in the 512 chip which is in the slot furthest from the front and the same symptons of just a solid power light with nothing else was exhibited. Removed the chip and placed the 1gb chip back into the slot closest to the front of the computer, everything worked fine. Startup was normal etc. Next, I removed the 1gb chip and put it into the slot towards the back and it would not work, next, moved the 512 chip to the front and all is well. Therefore, I think I have a bad memory slot given the torubleshooting procedures. Is this a correct assumption?
Here are my questions:
1. Are there any software solutions that will tell if the memory slot is indeed bad?
2. Does this sound like a hardware issue or is there an update to the core system that would fix this problem?
3. In order to get this repaired, would I take the imac to the apple store?
4. The computer was purchased in May 2006, if I purchased an applecare protection plan, would that cover the repairs or does it need to be purchased within 90 days of the computer?
Thanks in advance.

I think that sounds like a firmware update gone bad. Apple page I found says: "In the rare case that your computer displays a black screen after start up, you will need to restore your computers firmware back to factory condition before you can apply firmware update."
Dont know, but sounds like it.
http://docs.info.apple.com/article.html?artnum=303364
may be worth a try.

I just put 8 gb of memory into my new mini, but the computer is only reading 4gb. It tells me that bank 0 has 4 gb and that bank 1 is empty. Which slot is "o" and which slot is "1" ? I re-wiggled the new memory sticks, but it still only reads one of them.

I just added two new memory sticks to my new mac mini, each stick has 4 gb. The computer tells me that it now (with the new memory) only has 4 gb total, however. It says that bank "O" had 4 gb and bank "1" is empty. My two questions are... Which slot is bank o and which slot is bank 1? The computer didn't beep or anything, so I think its just that it doesn't recognize one card. I wiggled them again, in case maybe I didn't put them in tight or something, to no effect. Any suggestions on what I may not have done right???

Same issue here. All chips, old and new working in bottom slot 0 but nothing working in slot 1 (top.)
It also seems to be important to make the insertion at the right angle that was actually steeper than I thought at first. I also got a nice click when it slipped into place. You can also look at the position of the center slot/protrusion on the bottom chip to get an idea of how far the stick needs to be in.
Another thread pointed out that you have to make sure that the retaining clips don't engage before you get it into place as they prevent further movement.

I have new memory modules, 2x2 2GB DDR2 --800 SO DIMM0 to install in I-Mac early2008 ,currently with 1 GB DDR2 SDRAM. How do I find the memory slots ? I have the 4GB replacement modules from Crucial and general instr's., not specific to I-Mac.

I have new memory modules, 2x2 2GB DDR2 --800 SODIMM MAC to install into I-Mac early2008 ,currently with 1 GB DDR2 SDRAM. How do I find the memory slots ? I have the 4GB replacement modules from Crucial and general instr's., not specific to I-Mac.

https://www.ifixit.com/Guide/iMac+Intel+24-Inch+EMC+2111+RAM+Replacement/5196

USB ports and memory card slots not working

My Pavilion a6120n desktop has worked brilliantly ever since I purchased it. As of last week the 2 usb ports in the front and the 2 unused usb ports in the back have stopped working. My printer is plugged into one rear port and my wireless mouse is plugged into a second rear port and these work fine. I generally use a memory stick for data swapping or the card reader slots (which have also stopped working). I no longer see the memory card icons in the "Computer" window. When installing something new the "New Hardware Found" statement pops up but the driver install always fails. I think it is a software issue but there are no usb drivers to download on the HP/support site that I can find. . . so . . . Below is what I have tried so far.Run antivirus software. Full scan & memory scan - no issuesRun malewarebytes full scan - no issues I have tried restarting several times with no success. Restore to several previous restore points = failedRestarting computer in repair mode = failedRun the repair disk that I had made = failedChecked the power management for each usb port to see if the power was routed properly = okRemoved the case cover and carefully inspected the wiring and connectors.finally I tried uninstalling the usb drivers = failed Upon restarting the computer the last time the startup file must have failed and after several hours of attempting a repair I had to reinstall the Window 7 completely. Still no usb or memory card function. Any help would be appreciated Thanks,MrBob38

Hello , Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More. I have read your post on how the USB ports and memory card slots are not working, and I would be happy to assist you in this matter! Since you mentioned that you have already re-installed Windows 7 on your computer, and the USB ports still do not work, please contact our technical support for further assistance in this matter by clicking the link below to get the support number for your region.
www.hp.com/contacthp/
I hope this helps!
Regards

Replaced my HDD on iMac (9,1) and screw of memory slot grille is useless. How to replace it?

My original iMac drive was slow & would sometimes not show at all (Some other of my drives would have to be used as Startup Disk) so I decided to replace it. I bought a 4TB HDD from OWC & proceeded with the installation. Couldn't beleive how much dust was in there!
After replacement, when I went to close the bottom grille—the one which gives access to the memory slots—I found the screw had its head slagged & I couldn't make it turn. I need a replacement, but can't find it anywhere.
Anybody?

Tale the grill cover into an Apple repair station. I'm sure they can replace either the cover w/screw or the screw.

Maximum total memory and per slot, N500

I have a 4233 4DG with PM45 chipset. It has two memory slots. I'm currently using 2X2GB of RAM but would like to use two bigger sticks of memory to increase the total capacity? Does anybody know what the total maximum memory amount is or is it limited by maximum memory per slot?
Solved!
Go to Solution.

maximum memory is 4 gb with windows 64-bit ( 2x2gb ) for n500.

MS-7003 Memory slots

Fresh post on this problem:
My MS-7003 mobo had just come back from being RMAed
The problem i had at first was that i kept getting bsod errors when my 256mb micron memory was plugged into slot 2 on my mobo. so i ran MemTest86 V3.2 and got errors on test 5. The memory is fine when tested in slot 1.
I still have this problem with slot 2 even after RMA. Only now i get errors in test 5 & 8
Is this just a problem with not having any memory in slot 1? I only have one stick of 256 so i cannot test without buying more ram (which i can't afford atm) But in my mind the ram should work on it's own in either slot anyway!
Or is slot 2 still duff? The mobo ram and cpu came as a bundle so should be compatible.
My concern is when i come to use both memory slots at the same time. i.e i upgrade with another 256 ram will the memory in slot 2 cause errors?
All help appreciated.

Hi Harib0,
I'm running the MS-7003 mobo in my media centre PC.
Stumbled across your post while looking for BIOS flashes for the board, and thought I'd do some testing.
Have been running a P4 1.8A (512K Northwood) and 256MB micron DDR333 (2.5-3-3-8) in slot 1. Onboard graphics and sound and is running fine for me.
Tried running memtest-86 with this module in slot1 and slot2, no errors.
Tried 2 x 256MB Corsair VS DDR400 (3-3-4-8), slot1 and slot2 individually and both together, no errors.
Tried 2 x 512MB Corsair VS DDR400 (3-3-4-8), slot1 and slot2 individually and both together, no errors.
Tried 2 x 512MB Crucial (micron) Ballistix DDR400 (2-2-2-6), slot1 and slot2 individually and both together, no errors.
So the memory works fine on my board. Got my board from an OEM source as well it has BIOS version 1.0b31 which I assume is a beta BIOS. If you are using a different BIOS I'd really appreciate it if you could save it and send it to me before you RMA the board. If you install msi's live update 3 you can do this in windows with the following utility:
C:\Program Files\MSI\Live Update 3\FlashUty\Award\WinFlash.exe
I think you could be having one of 2 problems.
1. Bad BIOS that needs updating, although the update may not be available. I can check your BIOS on my system if you send it to me and perhaps my BIOS will resolve your problem.
2. Motherboard does not support your CPU. Again a BIOS update could solve this one but I wouldn't hold your breath for MSI to release one. This is an interesting link where MSI clearly state that "Pentium 4 Prescott (Celeron) - 2.8G - 533 - 21 - NO" does not work. MSI seem to be using a BIOS v1.1 and a lot of the Prescott CPU's seem to be incompatible.
http://www.msi.com.tw/program/products/mainboard/mbd/pro_mbd_cpu_support_detail.php?UID=537&kind=1
I’ve got a P4 3.0 I could test in the board but it’s a 512K 800FSB Northwood so I doubt there will be any problems. MSI’s site says the board works fine with 3.0 Northwood’s and Prescott’s.
Hope this is of some help and you get to keep the board cos the 9100 IGP is the best integrated graphics you can get.

MacBook Pro loses access to 1 memory slot upon shutdown or reboot in OS X 10.8.1

I have had 4GB of RAM in my mid-2009 13-inch MacBook Pro since a few weeks after purchasing it in 2009. Until a couple of weeks ago, this machine has been running OS X 10.6.8 with no RAM issues. I wanted to wait for 10.8.1 before doing a clean install of Mountain Lion on this MacBook So, the day that 10.8.1 was released to the App Store I immediately purchased and downloaded the new OS. I then performed a clean install of the OS, got all my software setup, and all was right with my MacBook.
However, over the next week I noticed upon startup or reboot of the machine everything felt sluggish. I opened the activity monitor and clicked on the system memory tab, it showed 2GB. I immediately clicked on the About This Mac button to see how much RAM was installed, it showed only one 2GB stick installed (the other memory slot was empty). The next option I chose was to restart the computer. Upon startup it still only showed one 2GB stick. Next, I shutdown the computer, opened the back cover, and proceeded to remove both 2GB sticks of memory. I blew out the slots with compressed air, swapped the positions of each stick and reseated the memory.
I started up the computer and to my pleasant surprise both memory slots were recognizing 2GB each (4GB total). I thought this had permanently resolved the issue, but unfortunately after every shutdown or reboot my MacBook (without fail) loses access to the second memory slot, unless I remove and reseat the memory.
This problem did not start until after installing 10.8.1. I have tried countless SMC and PRAM resets. Please help.

This didn't happen to me until I upgraded back to Lion the second time. I went from Lion back to a clean install of Snow Leopard back to Lion and then I had the problem with it not waking from sleep. The first instance with Lion I had no problems. So I decided to go back and do another install of Snow Leopard and the problem stayed with me. I am now on 10.8.1 and the problem remains the same.
I have, kind of, solved the sleep problems by putting hibernatemode at 25. This has allowed me to wake the computer up without a hard reset, but when I do wake it up it makes that hard drive spinning noise twice, almost as if it is waking up twice. Then, back to 2gb unless I reset the ram. I am going to take the case off tomorrow and just make sure everything is ok in there, but other than that I am just hoping it's not the logic board as my computer is a few years old now. I may also just throw a 4gb into the one thats working.
Memtest has found no problems either, both with 2gb and 4gb showing.
Thanks for the help everyone, this is really driving me nuts and answers are hard to come by.

DKA790GX Platinum and memory issues

I've had my dka790gx platinum now for approximately 2 weeks.
Build is as follows
DKA790GX-Plat - bios v1.6
AMD Phenom II X4 940
2 x 2gb Corsair Dominator 1066 (5-5-5-15 @ 2.1)
Gigabyte HD 4870x2
Creative X-Fi Extreme GF-PS
Tagan 900BZ
It has been working fine but all off a sudden I started getting the dreaded BSOD in vista 'apc_index_mismatch' and 'memory_management' - I've ran memtest and on the first test @ 45% the system reboots with 4gb of memory in. This happens whether it is running @ 800mhz or 1066mhz, I've also tried 4 x 1gb of corsair xms2 ddr 800mhz and get actually the same issue. If I run 2gb of memory then all tests are ran without any problems and again this is for both the dominator memory running @ 800 and 1066mhz, and also the xms2 memory.
I've then ran another test using the 2 x 1gb xms2 + 2 x 512mb xms2 (all ddr2 800) to give total of 3gb and ensuring all 4 memory slots are populated, and again all tests run fine.
I've tried the memory in ganged mode and unganged mode, but it doesn't make a difference, once i go over 3gb I have the problem, so is this a motherboard fault (i've opened support ticket but had to miss some info as it meant fully stripping down the pc to get hold of the sticker on the side of the pci slot) or a cpu fault seeing the memory controllers are on the cpu?

Quote from: BuD_Sp3NcER on 06-March-09, 03:35:29
As far as overheating is concerned, it really shouldn't be a problem. Before getting a cooler for my RAM, it would get too hot to touch during full load, but would never run into any sort of problem. If you don't believe me have a look at what a SUPER*TALENT Stick looks like: http://www.pcstats.com/articleimages/200702/supertalentT1000UX2G4_full.jpg - Compare that to the dominator, The SuperTalent has to be just about the ugliest MEM-SINK you could ever lay eyes on EXCELLENT RAM though
Kind of a really silly question here: when testing below 4gb, you are testing both sticks, right? I mean they look identical, a small distraction & you're putting the same one back in...happened to me...
yep memory was tested as single chips, also as stated previously testing 4 x 1gb of other memory caused memtest to fail, but 4 x 512mb passed, so did 2 x 1gb + 2 x 512mb
memtest fails all the time when have 4gb of memory in this mother in any combination, but using pc-check all memory passes, if my works had a ddr-2 memory checker then I would have also teste the memory in that as that will pick out memory faults better than any software
Also when the dominator is in slot 1 there is about 1cm between heatsink and dominator fins at the most, so this be a possible cause of the memory getting too hot especially as I would leave the machine on 24/7, but as I've re-setup another machine to do the stuff this machine was doing then i'm hoping i don't see the problem..

Memory slots on Lenovo G560

How many RAM memory slots has G560? I have 3GB of ram, 2 modules,first of 2GB and second 1GB. But when I run CPU-Z program it shows me 2 more free slots for ram. I couldnt find in user manual any information about memory slots and my laptop is under warranty yet so I dont want to open it to check,but I want to know how many slots are really there. Does anybody know?
Solved!
Go to Solution.

standard memory: 2 gb (removable) or 4 gb (removable)
maximum memory: 4 gb using a 32-bit operating system / 8 gb using a 64-bit operating system
expansion: 2 sockets
cpu & chipset: intel core i3 intel hm55
mfgr's system p/n's: 0679-xxx

Upgrade chip and memory

Can I upgrade the chip and memory? if so what can I use. The system is a little too slow. Yes I have all the software to speed it up. Thanks
HP 2000 Notebook PC Windows 8.1 64-bit [Edited for Personal Information] AMD E-300 APU with Radeon(tm) HD Graphics microprocessor 4GB SODIMM Kinston 800MHz memory 188B KBC Version 69.18 system board F.37 system bios HGST HTS545032A7E380 SATA Disk Device Product number: E0M17UA#ABA AMD E-300 APU with Radeon(tm) HD Graphics

Here is the Service Manual:
http://h10032.www1.hp.com/ctg/Manual/c03763129.pdf
Go through Page 16-17. Each different processor is soldered to the board, so you've to replace the whole motherboard for that, you can see that their part numbers are different according to three different boards.
I suggest RAM upgrade from 4 to 8GB by adding another 4GB in the other vacant slot, with configuration DDR3 1333MHz dual channel boost.
thanks,
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++Please click ACCEPT AS SOLUTION to help others, find this solution faster
**I'm a Volunteer, I do not work for HP**

Powerbook Lower Memory Slot Issue, what are my options?

Hi there,
I have a Powerbook G4 1.5ghz that I purchased in October of 2004. I had no problems with it until after upgrading the RAM to 2 x 512mb chips and then installing Tiger which resulted in me later notcing the missing RAM and learning about the lower memory slot failure issue.
I find that sometimes if I remove the RAM and try and power it up and then replace the RAM again that the lower slot ocassionaly does come back. Trouble is though that the machine will either crash or I loose the other RAM slot when I have to shut it down. It seems to be so intermittent this way and I'm tired of constantly removing the RAM to fiddle about with it.
My serial number begins W8441, so it isn't covered by the returns programe. I would call Apple Support, but I am put off by a £35 charge just to have them discuss and diagnose the problem.
I'm in the UK and as I don't have Applecare and I'm not elgiable for the returns programe can anyone tell me what they charge for a logic board replacment? Looking at what they charge in the US, it's not cheap.
I use my Powebook for Final Cut Pro, DVD Studio Pro, After Effects mainly and I had been alright with 1gig when it was working.
I'm really trying to decide what the best thing to do is....
- Do I pay for the logic board replacement, which I'm not really sure I can afford right now, or to be without my machine... especially as I have read that it can just fail again.
- Should I just buy a 1gig stick for the upper slot and try and sell my old RAM, as that would be cheaper than getting the logic board replaced?
It's a real shame that Apple doesn't seem to want to ackowledge that this effects other users as I'd been so impressed with everything about Apple up until now.
Thanks for any advice.

(Browse down for findings and questions).
The notorious lower-memory-slot-bug has hit my finally too... I never believed it until now (and I've immediately signed the petition).
I am outside warranty and I never bought Applecare either.
Also my powerbook, a very dear machine to me, is a less common type to have this problem: a 1 GHz G4 15" FireWire 800 OS 10.3.9 type. Funny enough my older powerbook ( a G3 Bronze) is still running strong with no problems whatsoever.
My G4 15" also has the "white spots" problem and a dead superdrive... I cannot believe how many hardware problems I'm having with this machine in comparison to all my older macs - even my sluggish powerMac 7200/90 never gave me this many headaches...
Alright, I'll stop complaining for now.
I've been able to browse the internet on this and found the following statements:
The lower memory slot gets "fried" because of a OS 10.3.9 upgrade,
or possibly due to overheating when the powerbook is put on the users' lap,
or possibly due to picking the powerbook up by the corners so the metal gets bent.
+ I have only seen one case where someone's UPPER memory slot was defective.
The solution to this problem (replacing the logic board) didn't seem to be definate in many cases so I'm reluctant to try this myself (and I have very little money). The alternative (replacing the upper slot memory with a bigger type of RAM) seems a bit scary to me,
because I wonder:
-will the upper memory slot RAM get "fried" eventually as well after a while?
-do you need to have something installed in the lower slot or is it possible to just install one RAM card only?
-are there more people with a 1 GHz PB that have this problem? It seems it's mostly people with a 1,67 GHz that have been bitten by this bug and maybe that's why Apple decided to give the majority a free repair. I am not sure whether that is a common policy, I am part of the minority it seems.
As a solutions someone posted on a board that we should all buy KTA-PBG4333/1G RAM, but here in Dutch stores it is said this memory is only compatible with 17" powerbooks....
Does anyone know if it is suitable for 15" as well??
G4 Powerbook Mac OS X (10.3.9) 1 GHz G4 Powerbook FW800

Memory Slot Utility "memory modules are installed in the recommended slots"

I've got two Mac Pros that give me this message. Every time I boot them up the Memory Slot Utility gives me the message that my memory modules are installed in the recommended slots.
This started after I installed an additional 8GB of RAM, bringing them up to 16GB. 8x2GB sticks.
I checked the login items and it's not there, so what else could I be missing?

I have this problem too on a Mac Pro Quad Early 2009.
Has 2x4GB + 2x1GB Runs fine with 10GB, but everytime I log in the memory utility pops up as if I have a problem.
How do I stop it annoying me?

Memtest and Memory Slots

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