It has been reported that there are systems out there with Windows 11 operating systems that do not use the whole RAM memory installed in the system. If by any chance you are one of the unfortunate users that has encountered this issue, fear not, we have a solution for you.
Run the Windows Memory Diagnostic tool
- Press ⊞ WINDOWS + S to open the search menu
- Type in Windows Memory Diagnostic tool
- Click on the found app
- Select Restart now and check for problems
- Wait for the tool to finish
Memory Diagnostic tool is a built-in tool in Windows, it was designed to automatically find and repair memory issues and should be your first step toward resolving this issue.
Check page file
- Press ⊞ WINDOWS + S to open the search menu
- Type in View advanced system settings
- Click on the search result
- Click on settings under performance
- Click on the Advanced tab
- Click on Change under Virtual memory
- Uncheck the box for Automatically manage paging file size for all drives
- Then select the drive and check the No paging file option
- Click on Set
- Repeat for all drives on the system
- Reboot the system for changes to take effect
If after reboot system still does not see and use whole available RAM, repeat this process and turn back ON paging. After you are done move to the next solution.
Modify usable RAM
- Press ⊞ WINDOWS + S to open the search menu
- Type in System configuration
- Click on the search result
- Go to the Boot tab and click on Advanced options
- Check the box for Maximum memory
- Enter the installed RAM on your system in the field box and click on OK
- Confirm once again on the OK and close the System configuration window
- Restart the system
If the provided solution has not worked, uncheck the Maximum memory checkbox and save the changes. Move to the next solution.
Change and modify the registry
- Press ⊞ WINDOWS + R to open the run menu
- Type in Regedit and press the OK button or hit ENTER
- Click on YES if prompted by UAC
- Locate the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory
- On the right side find and double click on the ClearPageFileAtShutdown DWORD
- Enter 1 under Value data and click on OK to save the changes
- Close the registry and reboot the system
Enable memory remapping inside BIOS
In order to do this fix, you will need to enter BIOS on your system. How entering BIOS is different from system to system depending on your manufacturer, especially if it is a laptop this step you will have to do alone. Go to your motherboard manufacturer or laptop manufacturer and see how to enter BIOS.
- Enter BIOS (80% of the time this can be done by pressing DEL or F12 while the system is turned ON)
- Locate System Agent Configuration option
- Select Memory Remap Feature and Enable it
Your BIOS might be different from ours and you might not have the System Agent Configuration option, in this case, go through the setting and try to locate Memory Remap Feature. If this feature is missing as well move to the next step.
Rearrange RAM modules on the motherboard
Sometimes RAM memory cannot be slotted properly or just purely switching them in slots can solve the issue. Take RAM out, clean memory slots, clean motherboard connectors for them, and place them back in a different order.
If by any chance none of the methods worked, then the issue might be in the hardware itself, either memory banks themselves, motherboard, power supply, etc. If this is sadly the case, you will have to locate the issue and replace the faulty part.
If you are not technical enough for this adventure, the best solution is to take a PC to a computer repair shop.