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Memory modules upgrade on ThinkPad P51

Q: Memory modules upgrade on ThinkPad P51

Currently I am trying to upgrade memory modules on my ThinkPad P51 of type 20HH. It was planned to have maximum, i.e. 64 GB, instead of original 8 GB. After some research four of Crucial 16 GB DDR4-2400 SODIMM CT16G4SFD824A have been obtained. With absolutely no problems two of them have been inserted in slots under the bottom cover. On that stage the laptop starts up and works perfectly with total 40 GB of RAM consisted of new 32 GB and original 8 GB. However, after adding a new memory module under the keyboard and/or replacing original 8 GB memory module with new 16 GB, and/or even putting original 8 GB memory module in the neighbouring slot, the laptop doesn't start up. Several attempts have been done to solve this problem, i.e. BIOS has been updated to 1.47 version, CMOS battery has been removed and returned back to its place, SSD drive has been removed and returned back to its place, the laptop has been turned on with a battery only, with AC power adapter only and with both of them. Nothing of the listed above helped to solve a problem. Did someone face the same problem? Is there a solution for it?

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Preferred Solution: Memory modules upgrade on ThinkPad P51

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Laptop is not booting up, getting blue screens and messages like:Page fault in Nonepage area.Kernel security check failure. I Run diagnostics and says:Module memory Quick random pattern test FAILED So I think it is a ram memory problem.i was thinking replacing it but found out it is soldered to the main board.That?s why I?m thinking there?s no solution. it is a Lenovo carbon X1 second generation. If you know about it and think there is hope, please share it.thanks!!!!!  

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Hiyas, I recently purchased 3rd party memory (https://www.amazon.com/gp/product/B07H4XNNXK/) that matches this computers specs, but the computer powers on and sits at a black screen.  I then purchased "compatible" memory, according to both Crucial's website and Amazon's website: https://www.crucial.com/usa/en/thinkpad-t490/CT14628403 https://www.amazon.com/gp/product/B019FRBHZ0/but this is also booting to a black screen. I talked to Lenovo tehnical support who told me I have to buy a module from the Lenovo store. They're $350 there. Does anyone know of any third-party 16gb modules that work in this laptop for the normal price of around $100?

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hello, I hope this is the right place to ask some Q about the IBM thinkpad G40 .. My son bought a second hand G40 some years back. It had/has only 256M memory. Now I want to upgrade the memory and I scanned the relevant web pages of Lenovo. Apparently the memory should be PC2100 or maybe PC2700 becasue of PC2100 availability ? (DDR)Now a cpu-z run on that laptop says the memory is PC2300 (142Mhz) so what gives ? Has this been put in to be on the safe side or ?and an additional Q .. can memory modules be mixed ? ie can I add a 512M PC2100 sodimm to get 768M ? or do I need to remove the original 256M and go for 2x 512M ?TIAImbsysop 

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A:Thinkpad G40 memory upgrade

Welcome to the forum! Your machine can run PC2100/2700 memory, and you can combine it, it will always run at PC2100 speed regardless of anything else. It can be mixed, no questions asked. If the G40 is Celeron powered, it will take up to 1Gb (2x512Mb) of RAM. If it's Pentium 4-powered, you can install up to 2Gb of RAM. Hope this helps.

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I am looking for memory upgrade options from 1x8GBSearching internet returns Crucial website for compatible sodimm  Option 1: get 1x 16GB  = total 24GBOption 2: get 2x 16GB = total 32GB Q1: I read some where that it is important to have two identical RAM. Perhaps I would go for option 2. Any suggestion Q2: For option 2, there are 2400 [CT2K16G4SFD824A] or 2666 [CT2K16G4SFD8266] version.The X1 unit came with 2666 8GB RAM, is it better to go for 2666 version, even through it is written in manual that the max support speed is 2400? Q3: Please share your choices for X1 extreme memory upgrade?   

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Howdy All! I just ordered a Thinkpad P70 with a XEON 1505-M processor. It comes with one 16gb ECC memory module. I want to add 3 more and when I checked Crucial.com's memory upgrade options, it only list 1x16GB NON-ECC memory modules! So two questions: 1) Can I mix the 1x16GB ECC memory module with 3 NON-ECC 1x16 modules? 2) How hard is it to install memory in the P70? My last couple of mobile workstations have been Dell M Precisions and adding memory was EASY (no need to remove the keyboard ,etc)! Thanks in advance! Aggie85

A:Thinkpad P70 Memory Upgrade Questions!

Aggie1985 wrote:1) Can I mix the 1x16GB ECC memory module with 3 NON-ECC 1x16 modules? 2) How hard is it to install memory in the P70? My last couple of mobile workstations have been Dell M Precisions and adding memory was EASY (no need to remove the keyboard ,etc)!About 1: It might be possible to mix ECC with non-ECC modules, but you would lose the error detection on all modules then. Since non-ECC modules are only slightly cheaper I would not recommend it. About 2: for the P50 it is a piece of cake to install memory, it should be no different on the P70.  As for memory: Lenovo currently uses Samsung modules. So if you want to go for the same 16GB ECC modules check for M474A2K43BB1-CPB. I do not know about Cruicial, but at least Transcend also got 16GB ECC modules (check for TS2GSH72V1B). I cannot say anything about the Transcend modules, but I installed two of the 16GB Samsung modules (besides the 8GB module that was already in) in my P50 had no problem so far (even checked with Memtest86+ for a whole night). Cubbi

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Hello, I have a new x1 extreme gen 2 Part No: 20MFCTO1WW with 16 GB DDR4 2666MHz. I would like to go to 32 or 64 GB if I can.  Could anybody suggest what memory I should buy and where? Thanks in advance, Ricky

A:ThinkPad X1 Extreme memory upgrade?

You can have up to 64GB (2 X 32GB).  The part numbers for the 32GB SODIMMs are 01AG871 or 01AG861.  Other configurations are possible depending on thether you have 2 X 8GB or 1 X 16GB and what you want to end up with,

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How can I be sure to get the right memory upgrade for my IBM Thinkpad [email protected] 2373 ans how can I tell how much memory it can take?

A:Memory Upgrade for IBM ThinkPad T42 2372

Sorry it is an IBM ThinkPad T42 2373...i have the specs from Everest if that helps?

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The current configuration of my system (as bought) is 4Gb RAM.  According to the specifictions, it is upgradable to 8Gb.  I had a conversation with Sales Support via Chat trying to find the correct part number for 8Gb memory to replace the 4Gb.  I was told that as my system is still under warranty, I would need to contact Technical Support for this to happen.  Having done a number of searches on this forum, would I be right in suspecting that the existing 4Gb is soldered in to place - hence the need for a Warranty call to upgrade.  I was advised that any attempt to make the change myself would void the warranty.Any thoughts please.

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A:Memory upgrade Thinkpad Yoga 11e Windows 8.1

http://thinkpads.com/support/hmm/hmm_pdf/tp_11e_yoga11e_hmm_en_sp40f29949.pdfThis seems to say there's one stick of socketed RAM.The bottom cover and the memory module are both marked as "optional-service CRU", so you won't really void warranty by replacing it yourself.The required RAM specification is this: PC3-12800 DDR3L SDRAM 1600MHz SODIMM. Just find an 8GB stick with those specs.

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Hi Guys. I have a Thinkpad T410i notebook with Windows 7 64-bit installed.It has 2x 2GB a RAM in it. I want to upgrade it to 2x 4GB.I got the RAM installed, in the BIOS its okay but Windows won't start. The loading screen freezes, in safemode it stuck at classpnp.sys, I tried renameing it to classpnp.old, after that its stuck at disk.sys.Windows recovery doesn't load. I loaded it with a Ubuntu live USB stick and that works. The ram is Kingston4GB Module - DDR3L 1600MHzPart Number: KVR16LS11/4Specs: DDR3L , 1600MHz , Non-ECC , CL11 , 1.35V , Unbuffered, SODIMM Is this not a good memory for Thinkpad T410i?    

A:Thinkpad T410i memory upgrade issue

Welcome to the forum!
If it works with Ubuntu is definitevely a Windows issue. Did you try to start in safe mode? Press F8 immediately after the ThinkPad logo appears when booting.

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Hi all, Just bought brand new Thinkpad P51 (20hh0014rt). All latest software updates installed.Now I'm trying to upgrade memory and installing Kingston HyperX HX424S14IBK2/32 kit of 2 x 16Gb in two the slots under the bottom cover - my notebook doesn't boot in this configuration (I press ON button, I can see power LED is on and hear the cooling system, but nothing happens...)When I remove this two memory modules - notebook bootup without problems. This modules are ok at 200% - I'm writing this right now at my Thinkpad P470 with both those modules installed. Is there any way of how I can use this memory with my P51? Thanks!

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Hi This is my first post to the forum. Regrettably I must start with a problem. Following suggestions on this forum I decided to upgrade RAM in my X200 to 8 GB. I bought 2 4GB chips branded by G.Skill http://www.gskill.com/en/product/f3-1600c11d-8gsl I was very disappointed to find the memory doesn't work. The machine won't start (black screen) with several pipping sounds.I suppose they mean DIMM problem. When I replaced the original memory chips everything is normal. Is this at all impossible and I should go for another memory ?Could possibly BIOS upgrade help ? I'd be very grateful for any comments and suggestions. Cheers,Chris

A:Thinkpad X200 memory upgrade failure

Welcome to the forum!
Unfortunately X200's are very picky with DDR3-12800 (DDR3-1600) like the ones you bought.
I would advice to buy DDR3-10600 (DDR3-1333) or DDR3-8500 (DDR3-1066) RAM. I would also recommend you to avoid the "Value RAM" line from Kingston, the "Value Select" line from Corsair (other lines from those brands are ok) and any no-name brand from eBay and similar shops.

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I know that the L520 allows a maximum memory of 8 GB. Do I have to use each slot to get maximun memory (4 + 4) or can I install a single 8 GB stick into a single slot and leave the other empty? If I can use the 8 + 0 method, does it make any difference as to which slot I install the stick? Additionally, does it make any difference in speed if I use the PC3-10600 memory or PC-12800 memory? i7 - 2620M processor

A:ThinkPad L520 RAM Memory Upgrade / Installation

I'm of the opinion a L520 will support 16GB, at least my T520 and both X220 I have do so. And they're the same generation as yours
Generally speaking it's better to have two sticks for dual channel, 2x 4GB should be better than 1x 8GB. Although the difference may not be so noticeable in normal daily usage.

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Hi!I have a problem with a memory upgrade on the Lenovo ThinkPad T510. Currently I have 2x2GB moduls and wanted to install 2x4GB.When I put 2x4GB in , Windows does not boot, just hangs on a black screen (before win logo). I tried:a) 1 x 4 GB front slot (I get a blue screen of death)b) 1 x 4 GB  back slot(I get a blue screen of death)c) 1 x 2GB + 1 x 4GB (i get black screen)d) upgrading bios - go to a) :e) testing memory in another laptop [works] New memory is  : 4GB DDR3 1600MHz PC3-12800 CL11 KingstonWhat do I do?

A:thinkpad T510 memory upgrade problem

Hi gbanina,I have the same problem when trying to use the same Kingston memory with my T510.Do you know to tell now whether this memory is not compatible with the T510 or it was just a bad memory card?Thanks!

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This morning I received my order for new memory for my laptop and after getting all excited... it didn't work   Old memory was: 1x HMT41GS6AFR8ANew memory is: 2x KVR16LSE11/8 I tried all combinations (new banks alone, 2gether with old, different slot, etc), it just never boots (no BIOS screen, nothing). I this topic: https://forums.lenovo.com/t5/ThinkPad-S-Series-ThinkPad-Yoga/Thinkpad-S540-RAM-Upgrade/td-p/1542834 I read:Your system will support DDR3 PC3-12800 & DDR3 PC3-14900 DDR3 (non-ECC), as your system was shipped with DDR3 PC3-12800, I suggest you to go for the same. You can check with 4GB PC3-12800 DDR3L SDRAM 1600MHz SODIMM.

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I was wondering whether somebody could shed some light on this issue. I am (as many more I guess) suffering from memory shortcut on my S440. Now I just stumbled uppon a new upgrade option from Curcial:http://www.crucial.com/usa/en/ct204864bf160b Is this module compatible with a S440 i7 4500u? BIOS might be an issue as far as I read.


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A:Thinkpad S440 16GB memory upgrade

No,  It won't work and the problem isn't the BIOS or a Lenovo limitation.  You have a 4th gen CPU  i7-4500u.  The 16GB modules only work on 5th gen or later

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Hi all, My Lenovo G575 is a few years old, but still works. I have only 1 RAM memory slot soldered onto motherboard. Windows 10 is installed, but quite slow on the internet. Can i upgrade RAM memory from 4gb 1066 speed to one single 8gb card? will it use 8gb or just 4gb? Any options to make internet faster, as i do have BT Fibre and only a few metres from router? Thanks all.

A:ThinkPad W510 RAM Memory Upgrade / Installation

OldComputer1999 wrote:
Hi all,
My Lenovo G575 is a few years old, but still works. I have only 1 RAM memory slot soldered onto motherboard. Windows 10 is installed, but quite slow on the internet. Can i upgrade RAM memory from 4gb 1066 speed to one single 8gb card? will it use 8gb or just 4gb? Any options to make internet faster, as i do have BT Fibre and only a few metres from router?
Thanks all.

From the parts list of the Maintenance Manual - your computer will only accept 4gb modules.  If you only have one socket on the motherboard, you are limited to a single 4gb stick.  Usually the system has the option for two memory modules, so I would suggest contacting Lenovo support by phone to discuss this situation.

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Has anybody upgraded the Ram in their Lenovo Thinkpad Yoga type 20CD from 4GB to 16GB? Thanks, Vasu 

A:Memory Upgrade Yoga Thinkpad Type 20CD

Welcome to the forums!
In regards to your question I doubt you will find anyone that has upgraded the RAM on this model since its soldered and and has no extra sockets.  See psref.

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Hey Lenovo Enthusiasts! I am about to purchase the Lenovo Thinkpad 550s, and I am tempted to purchase the baseline memory (4GB) and storage (512GB) HDD.  I want to make sure that I can indeed upgrade the memory to 16GB of RAM and the storage to a 256 (or 512) GB SSD. In my research earlier on, I noticed that somebody had posted a link to the parts list:https://download.lenovo.com/parts/ThinkPad/w550s_frubom_20150130.pdf I don't know what half of this technical jargon is, but from what I gather, I have found an SSD made by Samsung on Amazon, and an 8GB memory made by Data Memory Systems that seem to abide. SSD:http://www.amazon.com/Samsung-256GB-2-5-Inch-Internal-MZ-7KE256BW/dp/B00LMXBOP4 Memory:http://www.datamemorysystems.com/parts/lenovo/03X6657/ Questions:1) Could somebody wiser than me please verify that these products will work for the w550s? I was going to purchase them from Crucial, as they say that is is "100% compatible" but I am not sure still.Crucial: http://www.crucial.com/usa/en/compatible-upgrade-for/Lenovo/thinkpad-w550s 2) In regards to the warranty, does anyone know if I were to mess up the data preloaded on the HDD that is put in the laptop, by trying to transfer it to the SSD, would the warranty cover fixing this? Kind regards,Spencer

A:Lenovo Thinkpad W550s Memory upgrade to 16GB and S...

Very disappointing. Yes, I have the same problem (son, since it is your problem!). I note that over 189 people have at least looked at this question you asked before we decided to have you purchase the W550S...and after calling tech support one last time after my son purchased the machine (and was told there should be no issue)-we see BSOD multiple times within an hour.  They happen so quickly that it is hard to even note what the error message is.... I replaced his 512 HD with Samsung SSD 512GB drive. I used a disk duplicator-everything seemed to go great. Then I put in 16GB of RAM-again, everything seemed great. However, the notebook is only now being used frequently as my son is starting school now-and as said above, the BSOD is making me think this has something to do with the SSD or RAM replacement. Yes, obviously, it's fairly easy to replace with the original parts and see if the problem goes away-but he wanted the SSD and more RAM, so even if that fixes the issue-we will likely get rid of the notebook. BUT:  here is what disappoints me:  absolutely no comment on my son's original questions. I'm guessing I won't get input from Lenovo either....will try to call tomorrow, but we are almost beyond the point where we need to return the SSD/RAM and notebook if we want our money back. A little guidance from Lenovo would be appreicated before we need to make a decision.. Thanks,Steve

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I recently upgraded my T500 to a SSD and 8 gbtyes ram.  The diagnostics recognize the 8 gbyte upgrade but state only 4 gbytes are usuable.  I thought the machine maximum was 8.  Is there anything else I need to do to make the machine use the memory.
Moderator note: model added to subject for increased visibility.  Thread moved to correct forum.

A:Thinkpad T500 Memory Upgrade - Stupid Question Tim...

The ThinkPad T400 and T500 datasheet states that it can handle up to 8GB of RAM, so it should work unless you are running a 32-bit version of Windows, in which case the maximum RAM that can be addressed by the OS is 4GB regardless of how much RAM you install.       The Windows license key is valid for both 32 and 64-bit, but to go from 32-bit to 64-bit, you would have to uninstall and reinstall Windows. Windows Install Media Download Links,https://www.microsoft.com/en-us/software-download/windows7https://www.microsoft.com/en-us/software-download/windows8https://www.microsoft.com/en-us/software-download/windows10 Hope that helps,

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Hello to everybody,Recently I have bought a Lenovo Thinkpad X220 and I want to increase the memory, (by default is 4 GB) to 8GB or 16 GB. if it is possible. My question is if this laptop support without any problems or errors 16GB RAM of memory, because officially it is only 8GB.RAM, but I have seen on internet, people with 16GB Ram in this laptop, Are there any problem with this? If so, upgrade to 10GB or 12GB RAM would be posible instead? Also I want to increase the capacity in my laptop (by default is 320 GB.HDD), and I want to put a 500 GB SSD Disc, and if is possible to maintain both the Hard Disc anda SSD Disc, it would be possible to put SSD Disc into the PCI Express slot and mantain the Hard Disc at the same time. Or the only possibility is to replace the Hard Disc for a SSD Disc?Thank you very much,Regards.

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I recently purchased a Yoga 11e 20d9 model and so far I'm loving it.  However, I wanted to upgrade the memory from 4gb to 8gb.  I purchased Crucial 8GB Single DDR3 1600 MT/s (PC3-12800) as all the reviews I read said this was okay to use, however, everytime I install the memory and I try to charge the laptop at the same time it crashes.  I can run windows 10 perfectly without issue up until I try to charge it.  I can charge ther laptop when the laptop is off but for the life of me I can't get it to coexist.  I installed the original ram and everything works perfectly.   Even if I'm in bios, as soon as I plug in the charger the laptop will crash.  It literally has rips on the screen and everything fades out.  As soon as I unplug it, the laptop works flawlessly.   I returned the memory and got a replacement and it does the same exact thing.  I updated both the BIOS and battery firmware.  I am out of ideas.  Any help would be appreciated.  

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Does Anybody tried to upgrade RAM to 16GB?In the compatibility list I've found this:FRU for 16GB DDR3L-1600 SODIMMMEMORY03X7015Thanks

A:Yoga 460 Laptop (ThinkPad) - Type 20EL - Memory Upgrade to 16GB

Per psref.
Chipset Memory Intel SoC (System on Chip) platform 16GB max / 1600MHz DDR3L / one 204-pin SO-DIMM sockets
Below are manuals and videos that may help you.
Per parts lookup you have the right part.

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is it compatible if i connect a pc800 memory module with a pc533 memory module?

will my computer still run or there will be some technical issue's?

thanks in advance...

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I have just bought a load of 128 MB RAM and 256 MB RAM modules to upgrade a number of PCs ranging from 450 MHz P3 to 933 MHz P3.

The modules were specified as 100MHz SDRAM DIMMS, and although most of the PCs were non-branded, I was able to check the motherboard details and according to all the specs, there was no reason why these memory modules should not have been OK.

However, with the exception of one 600 MHz P3, none of the other PCs accepted the memory correctly - they all registered exactly half of the actual memory on the module.

I have heard of problems where double-sided modules would only register half their memory, but in this case all the modules were single sided. (I did not order them as single sided, they just came like that even though the spec was 16x64 for the 128MB and 32x64 for the 256MB which suggests double-sided to me.)

Where is the problem and how can I make sure I get memory that works properly?


A:Memory modules

Many new memory modules cause that problem. The issue is the addressability of the individual chips. The fewer number of actual physical memory chips the module has, the newer the memory support chipset on the MB needs to be to properly address all the memory. The address lines from the individual chips come directly to the module interface connection, and the MB has to be designed to use them. Some omit the high-order address lines to save money, and as a result they only address half the memory. I've personally traded several people older modules for new ones to solve this issue for them, it's quite common.

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I am in the market to purchase new memory for my computer. I hear Corsair is the best, but I wanted some expert opinion. What has the best reputation and is one model of memory faster than another? I have 2 slots available. Is there a memory stick made that is larger than 1Gb?

A:Memory modules...

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Looking for some help here! I ordered some RAM modules and my PC has 6 RAM slots. I have 4 x 2GIG Memory Modules coming in the post so is it ok to mix them on the same motherboard? So the total will be like this: 4 x 2GIG Memory Modules 2 x 1GIG Memory Modules So 10 GIG in total - is that cool to mix them? The RAM is all the same type - i.e. 240 Pin DDR3 RAM Thanks guys

A:Is it OK to mix RAM - so 1 GIG Memory Modules with 2 GIG's?

As long as they're the same speed too.

Example: PC3-3600

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I have a P4 Titan series motherboard and actual memory modules are 2 X 512 DDR 333/266/200 DIMM slots (2). I want to upgrade to 2 X 1gb. which is the max. I am looking at 1gb DDR400 ECC. Would this be compatible ?

A:memory modules

Go here and allow the Crucial System Scanner to load and run.

After the scan is finished and a report is displayed, copy-and-paste the webpage address to that report here so we can go there and view it.


If the motherboard is designed for DDR333/266 modules, it'll probably accept and run with DDR400 modules, but they'll run at the slower speed that the motherboard supports.


The larger the number, the faster the speed.

DDR400 is DDR PC3200(400 MHz)

DDR333 is DDR PC2700(333 MHz)

DDR266 is DDR PC2100(266 MHz)


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Hi Folks,My t430u just got upgraded for 16gb of ram, I upgraded the bios so it could handle it and everything.After testing memory everything looked fine from the perspective of the diagnostics but couldn't still boot the system to start or to format (Windows 10), then I read to remove the battery and press the button of power for 10 seconds to get rid of static electricity, after that, my keyboard stopped working and I don't have battery that controls time full, so will ask me to change time in bios and I can't get there cause cant use the keyboard.Bear in mind that with only 8gbs of ram, the pc would boot normally, i tried both ram slots and sticks.With all this in mind, can anybody relate or give a tip or help?Regards 

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My ZBook came with 2x4 GB memory modules and I want to upgrade with additional 2x8 GB. It is the same manufacturer and specifications, only the size is different. There are four memory module slots, how do I put the memory modules for best performance? Maybe: 8 GB in slot 1 and 3, 4 GB in slot 2 and 4  

A:Mix memory modules of different sizes

I have the Zbook 15 G3...very similar if not the same motherboard. I have 2 x 8 gig in slots 1 and 3 and it runs in dual channel so I would say put the 4 gig pair in slots 2 and 4. 

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A few memory module questions:

1) Given a memory module with timing of 5-5-5, is that otherwise known as Cas Latency 5? Is 6-6-6 Cas Latency 6?

2) Which of the two is more performance oriented?

3) Some mobos I am looking at on newegg.com bear the requirement "Only DDR2-800 memory supporting JEDEC approved 1.8V operating with timings of 5-5-5 or 6-6-6 is supported on Intel Desktop Boards based on Intel 965 Express Chipsets." In this instance, "Intel Desktop Boards" are those from Abit or Asus that accommodate Intel CPUs.

Is it sufficient to find DDR2-800 5-5-5 modules running 1.8V or is the JEDEC seal of approval also mandatory?

4) Is 1.8V synonymous with JEDEC?


A:1.8V JEDEC Memory Modules

Assuming you have a working system, you should try 4AllMemory and use their [Check My System] applet.

The applet will return a list with the exact specs for the DIMMs you need to match your system/motherboard.

Note I am not saying you need to buy from them, but their applet is really neat.

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Hello there

I was hoping someone could point me in the right direction.
I have a Satellite Pro M40 Part Number : PSM46E-00H002EN

I really want to upgrade the memory but I dont know what to get.
I know I want two 1GB ones but I don't know what type.

I have looked and there seems to be so many.

Could someone tell me exactly what I want or give me a link to one to buy.
I would be rerally grateful.

A:Re: Satellite Pro M40: What memory modules can I use


I think you should check this Satellite Pro M40 memory page:

Memory for Toshiba Satellite Pro M40

It says that you could use the DDR2 533MHz (PC2-4200) 200-PIN SODIMM memory modules and you could upgrade the memory up to 2GB RAM


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I have an older Dell XPS Studio 435MT that came with 6 1GB modules installed. About six months ago, I did a Crucial system scan that showed only 4 modules installed. Now, the scan shows only 3 installed. Are my memory modules failing? Thanks

A:Memory Modules Failing?

Open the case and remove/reinsert all of the RAM. They could simply be loose.

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ok so what's the difference between CL5 and CL7?

and also - which one of these four is better for gaming:

1- CORSAIR TwinX 4096Mb DDR2 1066Mhz CL7 KIT
2- KINGSTON HyperX 4096Mb DDR2 1066MHz CL5 tall HS KIT
3- GEIL Black Dragon 4096Mb DDR2 1066Mhz KIT CL5
4- CORSAIR Dominator 4096Mb DDR2 1066Mhz FAN KIT CL5

A:questions about DDR 2 memory modules

Cas Latency explained:
As for which is better of the 4, well the one that the configurator on their sites state is compatible with the board.

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I was given an IBM PC300GL Model 6561 with a monitor on the weekend. I upgraded the HD from a 3228mb to 6449mb out of a similar machine. The upgraded drive has Win98 SE. Also added a 10/100 DLink NIC. Both installed ok. The issue with this is the memory. It hade 32mb dimm NP in it and gave a #164 parity error for the get go. In researching the IBM web site I found all the specs and the Mem chart is under the cover as well. I have 2 - 32mb modules at 66mHZ, 1 - 128mb PC133. I also tried 2 - 64mb PC100 dimms with no luck as well. At one point the 2 - 32mb modules worked and I was able to install all of the hardware it found. After setting up the video and having to reboot the parity error came back? I have tried all of the appropriate combinations of memory and all I get now is an a 2 beep parity error and then System Halted. There is a BIOS upgrade available that I have downloaded but not yet tried. Is that worth a try? Any suggestions are welcome.

A:Memory Modules-Any Thoughts?

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I know that many good computer repair shops have a device that can test memory modules. Are there software programs that can be installed on the computer with the memory modules you want to test that can also do this? If so, are they pretty reliable? If so, any software names/products that you have tried and can recommend.

A:Testing memory modules?


Download MemTest86 here:
You want the Free Download => ISO image (zip)

Unzip the downloaded file. You will get an .iso image file. This file is burned to create a boot CD. To burn an image file you can't just copy the file to a CD. You have to use an image burning utility. Windows doesn't inculde one natively. If you don't have a third-party image burning program you can use this one:

It will put a right-click context menu option to burn an .iso file, or start the program and navigate to the .iso file you extracted above.


You would be running one stick of RAM at a time. If you have more than one, remove to leave just one, then run the test.
On the screen, you will see your CPU type and your chipset type on the top left.
The program run a series of 9 tests on the stick of RAM. A complete run of the 9 tests is one Pass.
The progress is shown at the top right: total Pass progress, and the progress of the currently running test. Some tests take longer than others. I ran a test on a single stick of 1 GB of RAM and one Pass of 9 tests took about an hour. Different hardware will take more or less time.
After a Pass is completed, the program starts all over again automatically. For a thorough test it can be left running for several Pases. Some folks let it 2 or 3 hours or even overnight.
You're looking for Errors. They are reported in the bottom horizontal line, n... Read more

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I have an PC with 4 memory slots. Two slots are currently occupied with 500MB SDRAM modules. I would like to add another gig. Can I just add a 1 gig SDRAM module or do I need to add two more 500MB SDRAM modules?

A:Mixing memory modules

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Hello, I was referred here from another forum topic by Computer Masochist ?garmanma? Link http://www.bleepingcomputer.com/forums/t/255906/infected-memory-modules/My problem is that I think I have a Memory Module Infection I can?t get Windows update to finish successfully, Windows Security Alert will not turn on, Malwarebytes' Anti-Malware 1.40 will only run in safe mode, and I get a report that reads as follows,Memory Modules Infected:\\?\globalroot\systemroot\System32\UACsvbmmnsnpn.dll (Trojan.Agent) -> Delete on reboot.It states that it will finish removing the infection on a reboot, but the infection returns. Can anyone help me remove this infection for good? Thanks to everyone I hope I included all the Reports that will be helpfull'

A:Possible Memory Modules Infected:

Hello and welcome to Bleeping ComputerWe apologize for the delay in responding to your request for help. Here at Bleeping Computer we get overwhelmed at times, and we are trying our best to keep up. Please note that your topic was not intentionally overlooked. Our mission is to help everyone in need, but sometimes it takes just a little longer to get to every request for help. No one is ignored here.If you have since resolved the original problem you were having, we would appreciate you letting us know. If not please perform the following steps below so we can have a look at the current condition of your machine. If you have not done so, include a clear description of the problems you're having, along with any steps you may have performed so far.Upon completing the steps below another staff member will review and take the steps necessary with you to get your machine back in working order clean and free of malware.If you have already posted a DDS log, please do so again, as your situation may have changed.Use the 'Add Reply' and add the new log to this thread.Thanks and again sorry for the delay.We need to see some information about what is happening in your machine. Please perform the following scan:Download DDS by sUBs from one of the following links. Save it to your desktop.DDS.scrDDS.pifDouble click on the DDS icon, allow it to run.A small box will open, with an explaination about the tool. No input is needed, the scan is running.Notepad will open with the results.Foll... Read more

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For my Lenovo ideapad 310 15lkb, the CRU ID,in parts list, for RAM is *, what should that mean?
I have a vacant RAM slot, so If I add a RAM to it, how does it affect my warranty?
Mod's Edit: Additional information added to Subject line for clarity of issue.

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A:310-15ikb - CRU is '*' for memory modules.

Welcome to the Lenovo Community !
The * mark in the parts list you were viewing means that particular module has been tested and approved for use in your laptop.  
For an additional reference, here is what a leading memory manufacturer recommends for your system.......
Adding additional memory will not void your existing warranty.  Although adding memory will require you to open your laptop, memory upgrades are permitted.

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When I run Malwarebytes' Anti-Malware 1.40 I get a report that reads as follows,

I states that it will finish removing the infection on a reboot, but the infection returns.
Can anyone help me remove this infection for good? Thanks to everyone

Memory Modules Infected:
\\?\globalroot\systemroot\System32\UACsvbmmnsnpn.dll (Trojan.Agent) -> Delete on reboot.
Malwarebytes' Anti-Malware 1.40
Database version: 2738
Windows 6.0.6001 Service Pack 1 (Safe Mode)
9/4/2009 9:34:33 AM
mbam-log-2009-09-04 (09-34-33).txt
Scan type: Full Scan (C:\|D:\|)
Objects scanned: 323886
Time elapsed: 49 minute(s), 17 second(s)
Memory Processes Infected: 0
Memory Modules Infected: 1
Registry Keys Infected: 1
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 2
Memory Processes Infected:
(No malicious items detected)
Memory Modules Infected:
\\?\globalroot\systemroot\System32\UACsvbmmnsnpn.dll (Trojan.Agent) -> Delete on reboot.
Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\UAC (Malware.Trace) -> Quarantined and deleted successfully.
Registry Values Infected:
(No malicious items detected)
Registry Data Items Infected:
(No malicious items detected)
Folders Infected:
(No malicious items detected)
Files Infected:
\\?\globalroot\systemroot\System32\UACsvbmmnsnpn.dll (Trojan.Agent) -> Quarantined and deleted successfully.
C:&... Read more

A:Infected Memory Modules

Welcome to BCWe can try a few thingsPlease download Dr.Web CureIt, the free version & save it to your desktop. DO NOT perform a scan yet.Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".Scan with Dr.Web CureIt as follows:Double-click on launch.exe to open the program and click Start. (There is no need to update if you just downloaded the most current versionRead the Virus check by DrWeb scanner prompt and click Ok where asked to Start scan now? Allow the setup.exe to load if asked by any of your security programs.The Express scan will automatically begin.
(This is a short scan of files currently running in memory, boot sectors, and targeted folders).If prompted to dowload the Full version Free Trial, ignore and click the X to close the window.If an infected object is found, you will be prompted to move anything that cannot be cured. Click Yes to All.When complete, click Select All, then choose Cure > Move incurable.
(This will move any detected files to the C:\Documents and Settings\userprofile\DoctorWeb\Quarantine folder if they can't be cured)Now put a check next to Complete scan to scan all local disks and removable media.In the top menu,... Read more

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 Hello Forgive my status as a technoramus, roll your eyes as necessary, then please skinny me on what I need to know to increase the 2G memory for my G550 laptop. Depending on price, I may go as high as 8G, but 4G or 6G are options, as well. So, what's compatible, and can I simply add to the existing 2G, or do I need to replace that module? Much obliged 

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I recently added some extra memory to my PC. My local superstore advised me that the unit they sold me was the same as the one already installed. This seems to be not so.

I ran SiSoftware Sandra and noticed the following differences in
'Speed' and in 'Set Timings'

Memory Module 1 >
Model: 64MX64U-40C
Serial Number: 050805C3
Technology: 16x(32Mx8)
Speed: PC3200U 2.5-3-3-8
Date of Manufacture: 25 December 1999
Set Timing @ 200MHz: 3.0-3-3-8
Set Timing @ 200MHz: 2.5-3-3-8

< Memory Module 2 >
Manufacturer: Dialog
Technology: 16x(32Mx8)
Speed: PC3200U 2.5-4-4-8
Version: 1.0
Date of Manufacture: 25 December 1999
Set Timing @ 200MHz: 2.5-4-4-8

Can you please advise me if the differences damage performance and if so is there any way of rectifying the problem or do I need a new chip. If so which one of the above is the better performer

Thanks in advance.

A:Mis - matched Memory Modules

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Appreciate some assistance.

Anyone own this type of PC who can tell which memory bank is Bank 1 (or 0) and Bank 2 (or 1)?

To access the memory modules the right side panel needs removed, but need to know if Bank 1 (or 0) is the one towards the front of the pc, or the one towards the back of the pc.

Trying to help someone by phone.

Thanks for the help.

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I have a dead Presario CQ50-209WM with 2 2GB memory modules. I'm taking over my granddaughters Dell Inspiron 1525 laptop that only has 2 1GB modules.

Presario CQ50-209WM has (2 GB RAM PC2-6400, 667-MHz, DDR2)

All I can find on the Dell is the following: DDR2 SDRAM Your computer has two user-accessible SODIMM sockets

Can anyone tell me if I can replace the modules in the Dell with the ones from the Compaq?

Thank you for any help.

A:Memory modules Compaq to Dell

The Dell specs say it can handle 2GB memory sticks per slot running at 667Mhz: http://support.dell.com/support/edocs/systems/ins1526/en/om/specs.htm

The memory should work but memory compatible is never a sure thing unless you buy exact sticks tested for a specific system, but chances are that they'll work.

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Hello, i own a xw8400 and want to use 4x8GB memory modules. I bought 64GB (8x8GB) DDR2 FB Fully Buffered PC2-5300F 667 Memory and they are accepted by the system. But - after some time the computer goes down / is switched off. There's no bluescreen or other hint helping to find the cause. The machine is switching of like pulling the power cord. At first i thought it might be a cooling problem. So i checked the temperature and it seems to be in regular limits (about 28-30C air temperature). I found info in the web, that 32 GB on that machine (2 CPU) should only be possible with a riser card (8x4GB). On the other hand it might only be a result of the fact that 8GB modules were not available at this time.I have two questions: * Is it possible to use 8GB modules on a xw8400 system with 2 CPU?* i am currently testing the modules with memcheck but is there any way to get diagnostic information why the system is shutting down?Thx G. 


View Solution.

A:8GB Memory Modules for xw8400 / xw8600?

This might relate.  I have not confirmed this but I believe the memory controller on the xw8400 is the same as on the xw6400.   I noted for a prior project that HP officially supported specific 8GB sticks in the xw8600, and that the xw6600 and xw8600 memory controllers were the same.  That gave me the idea that perhaps, though not documented, those same sticks for the xw8600 could work properly in the xw6600. I got some of those HP 8GB sticks and confirmed that they would run in my xw6600 builds just fine.  But, they would not run in my xw6400 builds.... same sticks, same perfectly functioning workstations if they had HP 4GB sticks in place. I believe you are running into a memory controller issue on that older generation xw8400 workstation..... the earlier (6400/8400) and later (6600/8600) generation workstation familes I note above have different memory controller chipsets.

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