Ram Issue with Windows 10 Solved/Closed

Question

Hello, 

I have a problem, I recently noticed that my PC instead of using Installed memory of 16GB is using only 8GB (7,96) I myself tried to make it use full amount of memory by advanced boot options but it didn't helped at all and in BIOS I don't have (or I think so) because I searched for quite alot of time option about memory revamping (or something like that) Im very sorry but english isn't my native leng and I tried to search for how to fix it by myself but at the end I wasn't been able to so I ask here. If anny addonational information will be needed I can provide that.

I have Win 10 Home

kieferschild · Accepted Answer

Give this a read, it will still apply to 10.

https://support.microsoft.com/en-gb/help/978610/the-usable-memory-may-be-less-than-the-installed-memory-on-windows-7-b

kieferschild · Answer

Hello,

please see this webpage which explains that Windows 7 Home 64-bit operating systems have a maximum memory cap at 8GB.

https://docs.microsoft.com/en-us/windows/win32/memory/memory-limits-for-windows-releases?redirectedfrom=MSDN#physical_memory_limits_windows_7

Voliar · Answer

Hi, kieferschild

i know Win7 have but I posses Win 10 :)

kieferschild · Answer

Sorry I didnt read.

Is it 32 or 64 bit?

What is the model of the motherboard?

Voliar · Answer

I have read this thing ealier and it as I said didn't helped much, my win is 64 of course, otherwise I would know hwere the problem is. My motherboard is gigabyte 990xa-ud3

kieferschild · Answer

Have you got the latest BIOS version?

Voliar · Answer

Im not sure about that, altrough FB and as I see there are 3 more... altrough I don't know how to update BIOS, could you explain or should try to find how to myself and then tell if something changed ?

kieferschild · Answer

If you go here:

https://www.gigabyte.com/Motherboard/GA-990XA-UD3-rev-1x#dl

Enter your product and it will let you download the latest BIOS version.

To get the BIOS version you need to go into the BIOS. During startup type F2 or DEL to get into the BIOS.

once you're in there it should be displayed on the first page.

Compare that to what is available to download from Gigabytes website.

Voliar · Answer

Ok so basicly my Motherboard rev is 3.0 not 1 and my BIOS is FD

kieferschild · Answer

Can you open Task Manager

Go to performance

go to resource monitoring

go to the memory tab and see how much is being used by hardware reserved.

Voliar · Answer

Here I have made a print screen of memory tab for you https://i.imgur.com/jATThqs.png?1

kieferschild · Answer

Can you click "open resource monitor" at the bottom of that page and send me the screenshot of that.

Voliar · Answer

Here you are https://i.imgur.com/dAJUySS.png?1

kieferschild · Answer

Well there is your missing 8GB.

It is being used by your hardware.

Voliar · Answer

I not really understand, it is something bad ? What I can do to change that to make it use all of it ? or it will just do it all by itself and just take when it need ?

kieferschild · Answer

Hardware reserved memory is used by the motherboard, GPU etc.

It can also depend on how big your page file is. Press Windows + X and go to System. Then go to Advanced System Settings and then Settings under Performance. Click the Advanced tab and where it says virtual memory - How much does it say it's using?

In the BIOS there will be an option to specify how much memory the graphics can use. Id start by looking in there.

I've also read that It could be a motherboard issue (issue with your sticks or slots).

Maybe you should take out all the memory and added them one by one and check the combination.

I can see your motherboard as 4 slots. They're in pairs of blue and white.

How many memory modules are you using? 4 x 4GB?

Are they all the same model?

You need to pair them, white white and blue blue.

Voliar · Answer

Okey so Virtual memory set there is 1920 mb 

In BIOS I can't find anywhere how much memory it can use but I maybe just don't know what im looking for 

and I have 2x 8GB Hyperx 1866 hz Those sticks are exactly the same and I have them in slot 1 and 2 (Yes same model)

kieferschild · Answer

You'll have memory slots on your motherboard like this:

A1
B1
A2
B2

You need to ensure your memory is seated in pairs.

A1 + A2
B1 + B2

In your case, the slots are coloured.

make sure the memory is in the same colour.

kieferschild · Answer

Also, in the BIOS:

"Various manufacturers use different types of software to handle system BIOS setting options. Consequently, finding the correct menu option for changing onboard video card memory settings may be easier with some models than with others. Nevertheless, the menu option you need to use to change the graphics adapter memory settings should be in "Advanced," "Advanced Chipset" "Advanced Features" or other similarly named section of the menu. You can use the arrow keys on the keyboard to navigate to the correct menu option or click the header if the system BIOS supports use of a mouse."

should be set to the following:

RAM     >      Recommended Video Memory
2GB         >         256MB
4GB       >           512MB
8GB or more  > 1024MB or more 
 
If at first you don't succeed; call it version 1.0

Voliar · Answer

Ok I have placed Ram in A1 and A2 what should I do now ?

@Edit: I didn't yet did what you said in second post as I posted while you posted in, give me a moment.

kieferschild · Answer

Have you powered on the computer and taken a look?

kieferschild · Answer

I think it's probably a memory mismatch with your motherboard.

Have you ever had the full 16GB on any other OS?

Here is the supported memory list: http://download.gigabyte.eu/FileList/Memory/memory_ga-990xa-ud3.pdf

Your motherboard supports:

DDR3 2000(O.C.)/1866/1600/1333/1066 MHz memory modules

Voliar · Answer

Ok I have taken a look in BIOS but I don't have anything which looklike with Ram, besides frequency and few other options which doesn't have to do anything at all (i think so) with RAM usage

And my DDR are HyperX 8GB 1866 (I have specially bought this frequency so I checked what my motherboard support ealier) and I have like I said ealier 2x of those 8gb

@Edit: And I didn't had, its my first 16gb OC I had ever

Voliar · Answer

So Anyone have any ideas what should I do and/or how should I fix it ?

kieferschild · Answer

Have you messed with your bios to try and over clock? I would put your bios back to defaults. Other then that, I'm out of ideas. I would recommend trying a pair of other memory to see what happens.

Voliar · Answer

Well I didn't overcloack like never but okey I will reset it to defaults, and about the memory, I have 2 other memory sticks one is 4 gb and other is 2, should I also add them ?

kieferschild · Answer

I'd see if you can get 6gb to detect

Voliar · Answer

At first I want to thank you for your help by far as im feeling that we're getting closer to answer to my problem, when I thought that if I add my whole RAM only 8GB will be still Usable... completly unexpected have happened. 

https://i.imgur.com/ArmtrA6.jpg?1

kieferschild · Answer

Yes take out the 2 X 8 and use the other stuff

Voliar · Answer

Well I have then 12 GB of RAM but windows is using only 8GB again

Voliar · Answer

Hello everyone, and especially you kieferschild, altrough you wanted to help me very much I want to thank you for all this attention you are really great men, basicly I came here to show that I don't know what happened (I installed Razer Synapse to get drivers for my Gaming Headset) and out of nowhere my windows is using all of 16 gb out of 16 

https://i.imgur.com/r6hwD9S.jpg?1

Anyway, if i'll have other problems I will write again, for now we can mark this thread as solved as maybe it'll help others in future, thanks again.

kieferschild · Answer

Glad to hear it!

Ram Issue with Windows 10

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