Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

Installed memory not available to windows


  • Please log in to reply
15 replies to this topic

#1 DryBoy5000

DryBoy5000

  • Members
  • 9 posts
  • OFFLINE
  •  

Posted 21 November 2016 - 04:17 PM

Hi,

 

I have 12GB of RAM installed in my machine, however Windows shows only 4GB usable.

 

I have tried the following:

 

Re-positioning of DIMMS and combinations of 1 - 3 sticks, at no point was more than 4GB available.

Currently all 3 are in and are installed as per mobo manual.

 

Updated BIOS

 

Use max memory option is checked in Windows

 

I'm really struggling for ideas now - perhaps the hive mind can help!?

Thanks in advance.

AVeryDryBoyBoyIndeed

 

Windows 10 Pro 64

CPU: i5 750

MOBO: ASUS P7P55D - E. Bios version 1601

RAM: 3x Kingston 4GB PC3-10600 CL9. KVR13N9S8H/4

GPU: GTX 1060 6GB

 

Attached Files



BC AdBot (Login to Remove)

 


#2 JohnC_21

JohnC_21

  • Members
  • 22,625 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:10:41 PM

Posted 21 November 2016 - 04:30 PM

What do you get if you uncheck use maximum memory? Normally this is unchecked. 


Edited by JohnC_21, 21 November 2016 - 04:32 PM.


#3 DryBoy5000

DryBoy5000
  • Topic Starter

  • Members
  • 9 posts
  • OFFLINE
  •  

Posted 21 November 2016 - 04:46 PM

My bad.

It's unchecked.



#4 JohnC_21

JohnC_21

  • Members
  • 22,625 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:10:41 PM

Posted 21 November 2016 - 04:57 PM

The only time I heard of this problem it was traced to the CPU. If you have dual channel memory you are using half your bandwidth with only three sticks on the one channel but you should still see more than 4GB. In msconfig what happens when you uncheck Number of Processors then reboot?


Edited by JohnC_21, 21 November 2016 - 04:58 PM.


#5 DryBoy5000

DryBoy5000
  • Topic Starter

  • Members
  • 9 posts
  • OFFLINE
  •  

Posted 21 November 2016 - 05:01 PM

This is currently unchecked...

#6 JohnC_21

JohnC_21

  • Members
  • 22,625 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:10:41 PM

Posted 21 November 2016 - 05:06 PM

Did this just happen or is this a new build?



#7 DryBoy5000

DryBoy5000
  • Topic Starter

  • Members
  • 9 posts
  • OFFLINE
  •  

Posted 21 November 2016 - 05:09 PM

It's been like it forever...
Had 8 in for a while as was donated a couple of sticks. Thinking that they were perhaps mismatched or faulty I recently purchased the new ones

#8 JohnC_21

JohnC_21

  • Members
  • 22,625 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:10:41 PM

Posted 21 November 2016 - 05:20 PM

And the donated sticks still showed 4GB? I am out of ideas on this one sorry. 

 

If you want to verify if this is a hardware issue and not some Windows issue you can boot a Ubuntu live DVD and open a terminal to check your available memory.

 

ubuntu-16.04-desktop-amd64.iso

 

https://www.cyberciti.biz/faq/check-ram-in-ubuntu/

 

Edit: Sorry, but I first should have asked if you see your full memory capacity of 12GB in BIOS.


Edited by JohnC_21, 21 November 2016 - 05:26 PM.


#9 DryBoy5000

DryBoy5000
  • Topic Starter

  • Members
  • 9 posts
  • OFFLINE
  •  

Posted 21 November 2016 - 05:29 PM

Yea.
I did read something about a bent pin on the cpu, just really hoping that's not it.

I shall give ubuntu a go in the morning

Thanks for the effort though
I'll have a look...

#10 DryBoy5000

DryBoy5000
  • Topic Starter

  • Members
  • 9 posts
  • OFFLINE
  •  

Posted 21 November 2016 - 05:32 PM

It is only showing 4095mb...

#11 JohnC_21

JohnC_21

  • Members
  • 22,625 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:10:41 PM

Posted 21 November 2016 - 05:40 PM

If your BIOS is only showing 4GB then this is a hardware issue and I would not bother with Ubuntu. It could be the motherboard but If I had to hazard a guess it would be the CPU. After flashing the BIOS you reset the settings to default, correct?



#12 DryBoy5000

DryBoy5000
  • Topic Starter

  • Members
  • 9 posts
  • OFFLINE
  •  

Posted 21 November 2016 - 05:50 PM

I did.

Damn it. Looks like more money...

#13 JohnC_21

JohnC_21

  • Members
  • 22,625 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:10:41 PM

Posted 21 November 2016 - 06:00 PM

It looks like somebody with the same motherboard had this problem. 

 

http://www.tomshardware.com/forum/282775-30-asus-p7p55d-board-recognize-installed



#14 DryBoy5000

DryBoy5000
  • Topic Starter

  • Members
  • 9 posts
  • OFFLINE
  •  

Posted 21 November 2016 - 06:33 PM

Fixed!
Thanks a million!

I'm so dry right now!

#15 JohnC_21

JohnC_21

  • Members
  • 22,625 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:10:41 PM

Posted 21 November 2016 - 06:38 PM

Your Welcome,

How did you fix it? The memory mapping feature in BIOS?


Edited by JohnC_21, 21 November 2016 - 06:38 PM.





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users