Solved used Toshiba laptop detects only 1GB of 2GB RAM installed

April 7, 2012 at 10:30:12
Specs: Windows XP, Intel Celeron M CPU 410 @ 1.46 gHz
I just bought a used Toshiba Satellite A110 st1111 Windows XP SP3 and installed 2GB (previously 256mb)of memory which is the maximum allowed for this system. Bios detects 894mb and system info only detects 1024mb. I tested both slots and sticks by using all combinations. Both slots and 2 1GB sticks work. I flashed bios 1.4-1.5. Video-ATI Radeon Express 200m series 128MB. Any suggestions? Thanks.

OS Name Microsoft Windows XP Home Edition
Version 5.1.2600 Service Pack 3 Build 2600
OS Manufacturer Microsoft Corporation
System Manufacturer TOSHIBA
System Model Satellite A110
System Type X86-based PC
Processor x86 Family 6 Model 14 Stepping 8 GenuineIntel ~1466 Mhz
BIOS Version/Date TOSHIBA V1.50, 1/11/2007
SMBIOS Version 2.4
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "5.1.2600.5512 (xpsp.080413-2111)"
User Name OWNER-IBAP57FNW\heather rivers
Time Zone Eastern Daylight Time
Total Physical Memory 1,024.00 MB
Available Physical Memory 498.35 MB
Total Virtual Memory 2.00 GB
Available Virtual Memory 1.95 GB
Page File Space 2.11 GB
Page File C:\pagefile.sys

See More: used Toshiba laptop detects only 1GB of 2GB RAM installed

Report •

April 7, 2012 at 12:24:25
✔ Best Answer
Are the 2 sticks identical? Did you try 1GB + 256MB?

Report •

April 7, 2012 at 12:36:35
The 2 sticks are identical. PC2-4200 DDR2-533mHz. Part #'s are the same. I did not try the 256mb w/ the 1gb stick.

Report •

April 7, 2012 at 13:38:59
I did what you suggested riider and yes, the 1gb paired with the 256mb was detected 1,280 in systems info and in bios system memory 633KB extended memory 1150mb. I also read the forum you linked me. I believe I may be having the same problem. I ordered these sticks about a month apart. Here is the numbers on the memory:

Samsung 834
this has 4 chips on it.

SEC 643 2C
8 chips

Do you think I should send one back and make sure they are an exact match right down to the brand?
I did think it was strange that the first one I bought was a dollar cheaper than the second. I thought they raised their prices. Wouldn't be a first.

Report •

Related Solutions

April 7, 2012 at 13:49:24
You almost always DO NOT need to update the bios version to get it to recognize the size of the ram modules properly.

It's a LOT more likely you're trying to use 1 gb modules that are not 100% compatible with using them in your mboard.

If the bios detects 512 mb of ram, total, when you install one 1 gb module in either slot, that's what your problem is.

You did try to use ram that has the right PC2-4200 DDR2-533mHz spec, but that's not the only thing that determines whether the ram module will be detected properly by your mboard.

If you buy modules, you should look on the web to see which specific modules are compatible with your computer (guaranteed to work properly in it) or mboard model BEFORE you buy them.

Crucial and Kingston have no listings for Satellite A110 st1111, but other sites DO.


Memory Upgrade for Toshiba Satellite A110-ST1111 Laptops

Report •

April 7, 2012 at 13:59:28
I googled memory upgrade and chose Kahlon because they had the cheapest price. I entered my info and this is the memory they gave me. I ordered them a month apart and received two different brands. Both of them work in my sys., but not together.

Report •

April 7, 2012 at 14:16:43
Riider, should I Send one back and get an exact match?

Report •

April 7, 2012 at 15:13:35
I can only guess it has something to do with one being double sided & the other being single sided. Does the 256MB stick have 4 or 8 chips? Did you try pairing it up with each 1GB stick or just one?

Report •

April 7, 2012 at 17:36:14
I paired the 4 chip together and it worked. No, i didn't try the 4 with the 8. I suppose i should try that. That could narrow it down some more.

Report •

April 7, 2012 at 17:44:46
Tubes< i snatched that bios flashing from another forum. Thanks for helping. I'm learning.

Report •

April 8, 2012 at 08:21:04
The 256mb is also working with both modules. Both of these has a 30day money back and I'm 2 days over on the second 1gb that I purchased. Gonna bite the bullet on this and purchase another 1gb module to match. Thanks for your help.

Report •

April 8, 2012 at 08:36:44
It took me a while to make response 4.
Your response 3 was not here before I started making what became response 4.

According to what you said in response 3, what you said in response 2 was NOT correct....
"The 2 sticks are identical."
"Part #'s are the same."

What you're supposed to do is use a "memory configurator" or similar on a ram manufacturer's or ram distributor's web site to find memory that is compatible with using it in your specific model, by using your specific model to search with, then you can use the ram manufacturer's part number (if it's listed) of the module to search the web or locally and buy them from any place on the web or any local place that lists or has that part number,

OR, you search the web using something such as your specific model and memory, e.g. Satellite A110 st1111 memory or memory upgrades. An example of a result from searching that way is at the end of response 4

(In this case the Kingston and Crucial web sites DO NOT list your A110 st1111 model. They list newer A110 models but the results of searching with that does not list PC2-4200 modules.)

You said in response 5...

"I googled memory upgrade and chose Kahlon because they had the cheapest price."

They DO have......

Kahlon Memory Configurator

The result for....

Toshiba Satellite A110-ST1111

1GB Memory (PC2-4200, DDR2-533MHz) KTT533D2/1G, PA3411U-2M1G

You DID NOT buy that module !

When the part number of a module you're trying to use is NOT listed for your specific brand name system model, or desktop retail mboard model, then there's no guarantee it will be 100% compatible with using it in your mboard when it's installed by itself, or when it's installed along with other modules.
It MAY work fine, but it MAY NOT !
When you have bought the ram, you may be charged a re-stocking fee if you return the ram if it's part number is NOT listed for your model somewhere on the web.

KTT533D2/1G is a Kingston module. It's been discontinued and Kingston no longer has any specific info about it. If they did, they usually have a *.pdf file for their modules that don't have brand name specific part numbers that tells you how many chips it has on it.

When you see pictures of ram modules on the web, they often DO NOT show you whether they have chips on both sides of the module or on just one side, and the text description usually does NOT tell you how many chips it has in total. The Kingston web site is one of the few places where you CAN find out if it has chips on both sides, if they have that *.pdf file for the module.

In most cases, if you know the brand and part number for brand name ram modules, wherever you got the module from, you can go to the memory brand's web site and find out if it's listed for your model by using their ram configurator or similar.
However, I don't think I've ever found a Samsung memory configurator on the web. There are lots of them for whatever memory brand for Samsung laptops and notebooks however.

When you search this way for memory...

" search the web using something such as your specific model and memory, e.g. Satellite A110 st1111 memory or memory upgrades. "

..... if they list a specific brand of module, e.g. Samsung, the brand's, e.g. Samsung's, part number of the module is often NOT shown, but whatever module they list is guaranteed to be 100% compatible.

It's likely that either one of the 1 gb modules you bought is not 100% compatible with using it in your mboard, the other one is,
or it could be BOTH of them are not 100% compatible with using it in your mboard.

Obviously they're not 100% compatible with using them in your mboard when both of them are being used in your mboard at the same time.

I'm guessing that both 1 gb modules need to have 8 chips, since the 4 chip 256 mb module's capacity is recognized fine, whether installed by itself or along with another module, and it probably has 1/4 the memory density per chip in comparison to the 8 chip 1 gb module. That's evidence the mboard recognizes lower memory density per chip individual chips fine.

The number or chips in total on the module is only relevant if the modules have the same total capacity.
When the total capacity is the same, usually modules with twice as many chips have half the memory density per chip on the module than ones with half that number of chips, but there are exceptions.
E.g. In rare cases, the way the chips are wired up can make the modules with 4 or 8 chips on one side be detected as if they had twice that number of chips, half the memory density per chip.

Report •

April 8, 2012 at 20:46:12
I contacted Kahlon earlier today web chat and a tech will be calling me Monday. I will certainly pass this information along. The chat help tech told me they should be compatible. According to what you have said she was wrong. I will find out tomorrow. Thanks for your lengthy response, I appreciate it.

Report •

April 9, 2012 at 08:06:06
If Kahlon has this module in stock:
1GB Memory (PC2-4200, DDR2-533MHz) KTT533D2/1G, PA3411U-2M1G

Kahlon part number: KTOS536

....if they look at it and it has 8 chips, then my assumption
"I'm guessing that both 1 gb modules need to have 8 chips..."
is correct, although that doesn't guarantee the 1 gb 8 chip module you already have is 100% compatible.

Report •

April 19, 2012 at 21:25:03
Sorry about the delay. Kahlon's is giving me an RMA on the 2 1gb modules and in return sending me a match pair. I'll post the results when I install them.

Report •

May 14, 2012 at 10:45:18
Matched pair memory installed and detecting both modules. Both of these have a total of 16 chips, 8 on each side. SEC K4T51083QE. They are not the KTT Kingston modules that show in the memory configurator on that website. Not sure why. They work well so I'm satisfied. Thank you for your help.

Report •

May 14, 2012 at 19:20:08
Thanks for the thank you.

We're glad to hear you solved your problem !

Sometimes when the main chipset requires lower density chips on the modules, modules with 16 chips will be recognized fine as well as modules with 8 chips being recognized fine.

Report •

May 16, 2012 at 21:41:28
Correction: In post #3 the Samsung 834 has a total of 8 chips, 4 on each side. The SEC has 8 chips on one side. In case that matters to viewers trying to resolve similar issues.

Report •

May 17, 2012 at 08:06:47
Usually when the module has all the chips on one side the memory on the module is organized as one memory bank, and when the module has chips on both sides the memory on the module is organized as two memory banks.

Whether a particular ram module is compatible with being used with a mboard may depend on that, and/or how the memory is organized on the individual chips on the module, and/or how those chips are wired up on the module.

Report •

Ask Question