12GB RAM Installed/Seen, only 2.99GB Usable

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Rykashin

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Hi guys,

After recently building the computer rig, my first build from scratch, as stated in my signature, it booted up fine, no problems at all. Everything working as expected.
However after checking in control panel I noticed the:
Installed Memory (RAM): 12.0 GB (2.99 GB Usable)

I've been looking all over the internet for a good few days for a fix to the issue, although to no avail.
I've checked the BIOS, and all 12GB is recognised. It is also all recognised by CPU-Z.

The 3 modules are installed in the correct DIMM slots, in accordance with the manual for triple channel memory mode. The Clock speed of the RAM is supported by the motherboard too.
As well, checking the Resource Monitor states that 9.2GB of the RAM is hardware reserved.

I have tried - re-sitting the memory modules;
unchecking and rechecking max memory in advanced options of control panel;
checked the BIOS for memory mapping ( not there ).

Detailed information on RAM modules:
Corsair XMS memory,
4096 MB sticks,
Timings: 8-8-8-19
Part Number: CMX12GX3M3A1333C9
Max Bandwidth: PC3-10700H (667MHz)
Information obtained from CPU-Z.

If any information or recommendations could be given on how to fix the issue it would be greatly appreciated, still fairly new to building from scratch and keen to learn. Screenshots can be provided if necessary, thanks!
 
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Natively your CPU only supports DDR-800/1066.
Try to change your DRAM ratio to set your mem to 1066.
If that by itself does not solve the problem then manually increase the DRAM voltage to ~1,55-1,6V to compensate for the additional load of 12GB of RAM.
 
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Thank you Bernhard, will give both of those a try and post the results!

Ice, thanks for the suggestion, have tried having it checked and also unchecked already but to no avail!
 
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Rykashin ,
I have a similar issue.  4GB installed, 2.99GB available.  
I have taken 12MP photos in macro mode to check each pin in the socket..took a while :shocked:.
I have read (anandtech) that the BIOS may need yet another update from the manufacturer.
I have read that changing the boot advanced options available memory settings can fix this.  Although, when I tried it, it resets to 0 after the reboot.  Forth time I quit.
I have moved each DIMM around in every configuration and 2GB is always available if it installed by itself.
I have read (anandtech) that some BIOS have a Memory Remapping feature that can help fix this.  I cannot find anything written about that for my BIOS (1.8).
I had a perfectly working setup with a Q6600 and a brand X UDP45 mobo before I upgraded 2 days ago.
There are 3 more options for me to try.
1. Clear the BIOS completely and start with only one DIMM installed like I was supposed to do the first time.  (THIS JUST WORKED FOR ME! THE PROBLEM IS SOLVED!)   :biggthumbsup:
2. Flash the BIOS with 1.8 over the top of 1.8 (if I can).
3. Whatever the moderator suggests.
4. Not reinstall Windows 7.



Windows 7 Ultimate 64bit
MSI P67-GD65 (B3) (Latest BIOS 1.8)
i5 2500K @ stock
G.SKILL Ripjaws Series 4GB (DDR3 1600)  (9-9-9-24-2N)


 
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I think my last post is getting moved so here goes:
1. RESET the BIOS COMPLETELY and start with only one DIMM installed.
2. Then reboot and check system properties.
3. Shut down and install the rest of the RAM.
4. Power on and check system properties again for the right amount of RAM.

Hope this helps.  It just worked for me.
My pins weren't bent either.......this time...
 
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thank you espaghetti, will give this one a try and hope it fixes the problem! Has begun causing stability issues when playing demanding games, cheers for the heads up :)
Shall post the results when I can!
 
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Thank you all for your help, have managed to fix the problem now!

After clearing my CMOS, I re-setup my BIOS, formatted my hard drives and did a clean install of W7, and hey presto 12GB available!
Respect to Espaghetti for the idea, hope this helps anyone with a similar problem! :worship:
 
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I've exactly the same problem, with msi bigbang xpower, corei7 950, 12GB Gskill Ripjaws 1600mhz CL8 (6x2gb), I've the blue screen with 12gb installed and without modify anything in bios for this memory, I removed the last memory to have my system to 10GB trichannel and all works fine, but the question, How to place the all 12BG without any probleme? my bios is updated to 1.6, and the speed of my memory is set to default so 1066Mhz, can I grow this value to obtain 1600Mhz like indicated for my memory? thanks in advance
 
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mohnumber7, if you want and need help with your problem, please open your own topic instead of posting the same sentences in multiple topics of other users that talk about issues that resemble your issue. Thanks in advance.

I am locking this topic.
 
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