How can I increase my usable RAM to 4GB in Windows 7?

farhad June 21, 2010
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I have a laptop (Acer 5741G) with 4 GB RAM. I run Windows 7 32bit

>ControlPanel >System shows that: Installed Memory(RAM) 4.00 GB (2.53 GB usable).

I found some patches for Windows 7 and applied them to my system and now it shows this : Installed Memory(RAM) 4.00 GB(3.87 GB usable)

I want to know is there any solution for get 4.00 GB usable in Windows 7 32bit?

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  1. Kazintwari Deo
    March 27, 2012 at 1:02 pm

    Can you just tell me how u did to increase your ram usable to 3.87GB

  2. Deogratias Kazintwari
    March 27, 2012 at 11:59 am

    How did you increase your usable memory got to 3.87GB

  3. Atpugnes
    December 29, 2011 at 4:04 am

    how do i uninstall this patch?

    • Mike
      January 11, 2012 at 5:52 pm

      From what I saw in the command file this patch ads a custom boot entry with a customized kernel executable to Windows and selects it as the default boot option.

      I would like to ask you to open up an elevated command prompt (right-click on "Start > All Programs > Accessories > Command prompt" and select to run as administrator)

      Type "bcdedit" in the command prompt and please reply back the output. With that I may be able to support you with the commands to remove the entry and uninstall the patch.

      The only other way would be to repair the entire boot BCD via the Windows CD/DVD however in rare cases it doesn't work and results in a not bootable installation.

      • FIDELIS
        January 12, 2012 at 12:50 am

        Hello, as an alternative he can use Visual BCD Editor(freeware) to find out or get rid of new entry added by patch:

        He can also use EasyBCD, but it is paid software:

    • Anonymous
      January 11, 2012 at 9:23 pm

      perhaps like this
      if you open system configuration (on run type msconfig) then click on boot you have to see two boot options one is for the normal windows and the other patch, perhaps you can delete from there. Also the patched kernel file "ntkrlICE.exe" in the folder "C:Windowssystem32" can also be safely deleted.

  4. A_12356
    November 21, 2011 at 8:06 pm

    it is normally to have only 2.87 GB ram when you have 32bit operating system , the problem with me to have onle 3.87 ram with 64bit operating system ,actiully I format my computer to full use the RAM ( 4 GB) , after that I found my RAM 4 GB ( 3.87 used) ?!!
    how to solve this issue plz help me !

    • Tina
      December 2, 2011 at 9:09 pm


      I recommend that you submit a new question via MakeUseOf Answers. You will receive an answer within several hours.

    • Rafik
      December 23, 2011 at 4:10 am

      do you have graphic card? if so, then the integrated Graphic and the graphic card shared the memory together.. i'm also in 64bit OS. Just like you said, DONT WORRY.. when it comes in running 64 bit application, the OS use all your RAM. The things that it shows the usable memory is that many application that running is 32 bit. Look at your task manager, view the processes... lots of x32.. :)

  5. Asam
    October 30, 2011 at 1:58 pm

    please how do i undo this fix

    • Tina
      October 30, 2011 at 11:08 pm


      what fix are you referring to?

  6. Asam
    October 30, 2011 at 10:31 am

    mine is writing 'test mode windows 7 build 7600' what does it mean and how do i get it off

    • Art_t60
      March 13, 2012 at 1:01 pm

      me also how do we get rid of this "Test Mode Windows 7 Build 7600" wat that is means?

      • Mike
        March 13, 2012 at 2:15 pm

        Microsoft KB about this "problem" including a FixIt download and the manual steps to get rid of it.

        Either requires your Windows installation to be activated.

  7. moztas
    August 28, 2011 at 5:46 pm

    patch did not work for me. still shows 4,00 GB RAM (2,59 Usable) on Windows 7 32 bit operation system.

    • Rafik91
      December 23, 2011 at 6:43 am

      Use RAMpatch... its for 32 bit Windows 7 to support 4 GB RAM..

  8. Jonathan_geraldi
    August 22, 2011 at 2:40 pm

    I have a 5 GB ram with 32 bit windows 7 os and have 3.42 GB usable. does this can work for that too?

  9. Pegasusturbo
    January 2, 2011 at 8:00 am

    Mr Farhad,
    Thank you very much. My laptop has increased immensely. Excellent patch! :-)

  10. Hassan
    August 23, 2010 at 3:50 pm

    Thank you MR. Farhad. It worked well

    • Farhad2161
      January 2, 2011 at 8:07 am

      your welcome MR.Hassan

      • Anish
        March 25, 2011 at 7:33 am

        where can I download the patch from ?

  11. Gianluca Azzopardi
    June 22, 2010 at 1:18 pm

    could you kindly explain what to do with that file?


    • Farhad2161
      June 23, 2010 at 1:06 pm

      1-Run Patch-3-Windows-Vista-and-7.exe and press Apply.
      2-Press Yes and wait a few second and then press ok.
      3-Run AddBootMenu.cmd as administrator and press Y key.
      4-Wait a few second and when "The operation completed successfully" appeared, restart your computer and choose new item that added to your boot menu.

      • novice user
        September 7, 2011 at 1:25 pm

        Thanks for your suggestion. I have already did first 3 steps successfully but I am not able to understand "and choose new item that added to your boot menu." line. Sorry for asking stupid questions but can you please explain this line more in detail?


      • Rafik91
        December 23, 2011 at 4:04 am

        why you using software instead you can set in msconfig tab.. i've 2GB vram graphic card,4GB of ram memory.. 

        1. Type msconfig in the search box
        2. goto Boot tab
        3. click Advanced Options
        4. Tick Maximum memory to your full ram. (in my case 4GB, so 4096)
        5. Then press OK.
        6. Double check it again by click the Advanced options again. If you found out that the Maximum memory reset to 0, then change it to 4095.
        7. Restart your computer.

  12. Taty
    June 22, 2010 at 3:26 am

    HI Farhad2161
    It does seem to be a glitch to have only 2.53 usable ram for 4 GB installed, and I am glad you have found a fix, but I do agree with Tina that you might have reached your maximum. Ram gets mapped by certain programs and hardware as you boot you computer, so for example, if you have a built in video card that used 256 mb of ram, it will map and reserve that as you boot, so it's very common for ram to show lower than the total amount installed.

    • Farhad2161
      June 22, 2010 at 11:08 am

      my video card is Geforce GT 320M with 1024MB Dedicated (No Share) RAM.
      Also You can Check my laptop specification:Acer 5741G

  13. Tina
    June 21, 2010 at 6:03 pm


    we had a similar question, previously:
    Why can my 64-bit system only use 3.75 GB of RAM, when it has 4 GB and should support 8 GB?.

    Saikat had the perfect answer to that one. In short, don't worry, it's normal and you most likely can't increase it any further.

    However, I would be interested in learning what type of fix you found online to go from 2.53 GB, which is way too little usable RAM for 4 GB installed, to 3.87 GB. This information may be helpful for others.

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