Windows 10 memory 16Gb DDR3 installed 2.67useable

I have an MSI FM2-155m-33 motherboard with 16GB DDR3 memory installed. I keep getting message that memory is low.

Windows 10 64bit OS, shows in system that I have 64bit system but only showing as 2.67 useable.

Can anyone please advise?

Unless you're sure you installed the Windows 10 x64 & not the x32 bit ( Because x32 can only read 4 gb of memory)

OPTION ONE 

Set Maximum Memory for Windows in System Configuration (msconfig)
1. Press the Windows + R keys to open the Run dialog, type msconfig, and click/tap on OK.

2. If prompted by UAC, then click/tap on Yes.

3. Under the Boot tab in System Configuration, click/tap on the Advanced options button, and do step 4 or step 5 below for what you would like to do. (see screenshot below)
4. To Have Windows Use All Installed Memory
NOTE: This is the default setting.
A) Uncheck the Maximum memory box, click/tap on OK, and go to step 6 below. (see screenshot below)
NOTE: If the box is not checked, then it does not matter what the selected number is since Windows will use all available RAM by default and ignore whatever value is in the box underneath.
5. To Have Windows Use a Specified Maximum Amount of Memory
NOTE: Only when the box is checked, can you specify how much installed RAM you want to allow Windows to be able to use in the drop down box.
A) Check the Maximum memory box, then type in how many MB of your installed Memory that you want Windows to only be able to use up to, click/tap on OK, and go to step 6 below. (see screenshot below)
6. Check the Make all boot settings permanent box, and click/tap on OK. (see screenshot below)
NOTE: You will still be able to come back and make changes again if you like.

7. Click/tap on Yes. (see screenshot below)
NOTE: You will still be able to come back and make changes again if you like.

8. Click/tap on the Restart button. (see screenshot below)
WARNING: This will restart the computer immediately. Make sure you save and close anything open that you do not want to lose first.
   Tip
If you checked the Don't show this message again box and would like to restore this Restart box to display again, then see: How to Restore the System Configuration Restart Prompt in Vista or Windows 7

9. When Windows is finished restarting, it will now be using only the maximum amount of memory that you specified.
NOTE: You can look in Task Manager (CTRL+SHIFT+ESC) to confirm this amount of memory.




 OPTION TWO 
Set Maximum Memory for Windows in Command Prompt in Windows

1. Open an elevated command prompt in Windows 7 or Windows 8.

2. Do step 3 or step 4 below for what you would like to do.

3. To Have Windows Use a Specified Maximum Amount of Memory
A) In the elevated command prompt, type the command below, press Enter, and go to step 5 below. (see screenshot below)
bcdedit /set {current} truncatememory bytes
   Note
Substitute bytes in the command above with how many actual bytes of maximum memory you want Windows to be able to use.

1073741824 bytes = 1 GB

(1073741824 x GB = bytes you type in command)



For example: If I wanted to set Windows to use 2 GB of maximum memory, then 1073741824 bytes x 2GB = 2147483648. I would type this command below exactly.

bcdedit /set {current} truncatememory 2147483648


4. To Have Windows Use All Installed Memory
NOTE: This is the default setting.
A) In the elevated command prompt, copy and paste the command below, press Enter, and go to step 5 below. (see screenshot below)

bcdedit /deletevalue {current} truncatememory


5. Restart the computer to apply.



 OPTION THREE 
Set Maximum Memory for Windows in Command Prompt at Boot

1. Open a command prompt at boot for Windows 7 or Windows 8.

2. Do step 3 or step 4 below for what you would like to do.

3. To Have Windows Use a Specified Maximum Amount of Memory
A) In the command prompt, type the command below, press Enter, and go to step 5 below. (see screenshot below)

bcdedit /set {default} truncatememory bytes
   Note
Substitute bytes in the command above with how many actual bytes of maximum memory you want Windows to be able to use.

1073741824 bytes = 1 GB

(1073741824 x GB = bytes you type in command)



For example: If I wanted to set Windows to use 2 GB of maximum memory, then 1073741824 bytes x 2GB = 2147483648. I would type this command below exactly.

bcdedit /set {default} truncatememory 2147483648



4. To Have Windows Use All Installed Memory
NOTE: This is the default setting.
A) In the command prompt, type the command below, press Enter, and go to step 5 below. (see screenshot below)

bcdedit /deletevalue {default} truncatememory



5. Restart the computer to apply.

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Thanks for info, carried out as detailed. Noted in Task Manager that 13Gb of memory is hardware reserved, not noticed this before.

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Last updated May 22, 2019 Views 1,330 Applies to: