How can I use all available RAM???

Any idea how I can use all available RAM?  I have 12GB but it's only using 4GB:Speccy Screenshot
hrolsonsAsked:
Who is Participating?
 
JohnBusiness Consultant (Owner)Commented:
Are all the modules the same type and speed (as I asked).

Is it possible to try 1 module of memory in one socket and then the other socket?
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arnoldCommented:
The limit on usage could be a consequence of the windows OS on the system.
32bit windows OS is limited to 4GB

What is the system used for that it needs more memory?
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Joe Winograd, Fellow&MVEDeveloperCommented:
> it's only using 4GB

That almost surely means that you have 32-bit (x86) Windows. To use more than that, you'll need 64-bit (x64) Windows. Here's Microsoft's article on the subject, with some nice charts:
https://msdn.microsoft.com/en-us/library/windows/desktop/aa366778(v=vs.85).aspx

Regards, Joe
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Scott CSenior Systems EnginerCommented:
I don't know if the icon means anything but that looks like a Windows XP icon.  If you are running Windows XP there is virtually no change that you are going to use that extra memory.  There were copies of 64-bit Windows XP, but they were not commonplace.

What OS are you running?
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JohnBusiness Consultant (Owner)Commented:
Also make sure the memory modules are compatible with each other and that all the memory sockets work (notably ThinkPad T30 machines had bad memory sockets).

And then, as per above, please let us know if the OS is 32-bit.
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hrolsonsAuthor Commented:
I am running the 64-bit version.  Please see attached:

mem_screenshot2.jpg
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Did your machine come with 12 GB of RAM or did you upgrade?

It could be incompatible RAM.  In one case I've seen suggestion that it's the difference between 1.35V RAM and 1.5V RAM.
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RaminTechnical AdvisorCommented:
Make sure your BIOS is the latest version.
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arnoldCommented:
Check the bios, memory configuration.  Check the graphics configuration to make sure you did not allocate 8GB to the graphics side.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
CPU-Z can help identify the RAM - I'd suggest running it and putting up screen shots of the Memory tab.
https://www.cpuid.com/softwares/cpu-z.html
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RaminTechnical AdvisorCommented:
I think your PC is a little old to work properly with Windows 10.

The latest BIOS update is 2010 for Windows 7 and there was no driver for Windows 10.

Your System probably will work fine with Windows 7.
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serialbandCommented:
Also, what programs are you running?  Are you just running the one program?  A 32 bit program running in 64 bit Windows 10 is still limited by it's 32 bit nature while running in wow64.dll.
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arnoldCommented:
The issue is not. Restriction on a program, but the OS reporting that only 4GB of the 12 installed are usable.
Check device manager to see whether there is

In bios, check to make sure it is not set to OS install mode.
That may limit ...
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nobusCommented:
post the exact model, this one eg only has a max ram of 2 GB :  https://www.cnet.com/products/hp-pavilion-dv6000/specs/
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Lawrence TsePrinciple ConsultantCommented:
If Windows can tell you 12.0GB installed means your BIOS and hardware can recognize the memory correctly, just Windows has some setting "blocks" you from using the remaining 8GB.

Did you upgraded your OS installation instead of fresh installing?  Did you manually add memory module?

I also notice you have 4 of 4 RAM slot occupied.  How to make up a 12GB?  2x2GB + 2x4GB? If that's the case I suggest you remoive the 2x2GB and put the 2x4GB on the original slot of those 2x2GB and check the result.  And, optionally you can put back the 2x2GB onto the swap-out slot, you might be lucky enough to get everything works.

If that's still not OK, maybe you would like to try this:

"This problem may occur because the Maximum memory option is selected incorrectly. To fix this, follow these steps:
1. Click Start, type msconfig in the Search programs and files box, and then click msconfig in the Programs list.
2. In the System Configuration window, click Advanced options on the Boot tab.
3. Click to clear the Maximum memory check box, and then click OK.
4. Restart the computer."


Reference.   This article is for Windows 7 but also works for Windows 10.
https://support.microsoft.com/en-hk/help/978610/the-usable-memory-may-be-less-than-the-installed-memory-on-windows-7-b

Cheers.
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hrolsonsAuthor Commented:
So I pulled all the memory and tried stick by stick.  The two 2GB sticks worked fine, but the two 4GB sticks made the computer beep when I installed them in the 1st 2 slots.  I put four new 4GB sticks in and it is happy at 16GB.  No Idea what questions to mark, as all were VERY helpful.
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JohnBusiness Consultant (Owner)Commented:
Start with https:#a42462978  (where I said change modules) and then select other ones that you deem helpful
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JohnBusiness Consultant (Owner)Commented:
Thanks and good that you have it all working now
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