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RAM not being detected


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#1 escobarjesus97

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Posted 21 November 2013 - 09:12 PM

i have 2 8gb sticks of RAM installed in my computer. when i boot up my computer, the BIOS only detect 8gbs installed. and on windows it says that there are 12gbs installed. what do you think the problem is?



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#2 TsVk!

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Posted 21 November 2013 - 11:21 PM

RAM frequency is probably incorrect... Look for a setting called XMP in the BIOS and enable it.

 

EDIT: if this is a new problem that came with new memory sticks your machine could require a BIOS update also...


Edited by TsVk!, 21 November 2013 - 11:33 PM.


#3 Kilroy

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Posted 22 November 2013 - 10:25 AM

Make and model of your machine/system board would be very helpful.

 

Normally I go to Crucial and use their Memory Advisor tool.  This will tell you how much RAM you can install on a given system, if it needs to be installed in pairs, and other useful information including the specifications of RAM that will work in the machine.



#4 escobarjesus97

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Posted 22 November 2013 - 09:11 PM

Make and model of your machine/system board would be very helpful.

 

Normally I go to Crucial and use their Memory Advisor tool.  This will tell you how much RAM you can install on a given system, if it needs to be installed in pairs, and other useful information including the specifications of RAM that will work in the machine.

the motherboard is gigabyte, the model is M68MT-S2



#5 jhayz

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Posted 23 November 2013 - 01:17 AM

Did you checked the maximum RAM support for your motherboard?


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#6 KingdomSeeker

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Posted 30 November 2013 - 11:16 PM

Also there is a limit per slot. The beast I have now it's 4 GB per slot. Also if you have a 32 bit OS it won't recognize as much RAM as a 64 bit system.



#7 rotor123

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Posted 01 December 2013 - 11:21 AM

Hi, According to the Motherboard Website for Your Motherboard, a GA-M68MT-S2 GA-M68MT-S2 (rev. 1.3)

 

Memory

  1. 2 x 1.5V DDR3 DIMM sockets supporting up to 8GB of system memory (Note 1)
  2. Dual channel memory architecture
  3. Support for DDR3 1333+/1066/800 MHz memory modules

However if You have the GA-M68MT-S2 (rev. 3.1) from here

 

Memory

  1. 2 x 1.5V DDR3 DIMM sockets supporting up to 16GB of system memory (Note 2)
  2. Dual channel memory architecture
  3. Support for DDR3 1600/1333/1066/800 MHz memory modules
(Please refer "Memory Support List" for more information.)

(Note 1) Due to Windows 32-bit operating system limitation, when more than 4 GB of physical memory is installed, the actual memory size displayed will be less than 4 GB.

 

So bottom line the maximum memory depends on the hardware revision of the motherboard. Based on You post I'm guessing it is the rev. 1.3

 

The revision number is on the lower left back of the motherboard by the mounting screw hole.

 

Good Luck

Roger


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