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Test RAM with PassMark MemTest86

xilolee

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PassMark MemTest86 is a stand alone memory testing software program originally developed for x86 computers.
It was re-written to work on x64 devices (with the native 64-bit support) and on new UEFI-based machines.


  1. Follow the instructions below for running MemTest86 from either a USB stick or CD/DVD (i.e., you don't need both).

    Download MemTest86 and burn it onto a USB stick

    Simple steps
    Read More:
    Detailed steps
    Read More:
    Download MemTest86 and burn it onto a CD/DVD

    Simple steps
    Read More:
    Detailed steps
    Read More:
  2. Leave the USB stick, or CD/DVD, inserted.
    You should now "tell" your machine to boot from the media you created right now, through its boot menu.
    To access the boot menu, reboot your computer.
    During the initial stages of the boot process, press the applicable key as prompted.
    As an example, F11 is usually the key for the boot menu on ASROCK motherboards.
    If you don't know the key for your system, check your motherboard manual or this tutorial:
    Get access to BIOS settings & Boot Menu: F-keys/Hotkeys by System Manufacturer (OEM) (click).​
    Select the USB stick, or the CD/DVD disc, with MemTest86 on it.
  3. Wait some minutes (it needs almost 80 seconds on my machine) and MemTest86 will be available on your screen.
  4. If the program won't start, and you'll be redirected to the boot menu (or your machine boots windows), it could be necessary to disable the Fast boot feature (in your BIOS settings).
    To enter the BIOS settings, during the initial stages of the boot process, press the applicable key as prompted.
    It is usually Del or F2.
    If you don't know the key for your system, check your motherboard manual or this tutorial:
    Get access to BIOS settings & Boot Menu: F-keys/Hotkeys by System Manufacturer (OEM) (click).​
    If you still can't launch the program, it could be necessary to enable the CSM (Compatibility Support Module) in your BIOS settings.
    This is also known as Launch CSM or boot: legacy (instead of boot: uefi).
    If you still can't launch the program, try to disable also the Secure boot feature.
  5. When finally MemTest86 will be available on your screen, it will automatically start the test.
    You can use the letters between parenthesis to access its menus and the arrows on your keyboard to navigate through menu options.
    Your mouse (and the mouse pointer on the screen) could also be available (mine was, but it was also slow).
  6. Press T (on your keyboard) to access the test selection and modify 4 passes to 8 passes, or click test selection with the mouse pointer and then modify that value.
  7. Then press S (on your keyboard) to start the test, or click start test with the mouse pointer.
    Wait until it finishes or until an error appears.
    This test could take few hours.
  8. At the end of the test, you can save an HTML report.
    You'll find it in the USB stick, in <YourUsbLetter>:\EFI\BOOT.
    Example: H:\EFI\BOOT\MemTest86-Report-20171203-195935.html.
  9. Added by Philc43: when errors are found with a single stick, it is also worth testing that stick in other slots to check that the errors are not due to a MB slot problem.
    Check the lines after the warning in this tutorial for more details (click) (and obviously, read also the warning).
Screenshots

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Last edited:

axe0

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A note, in version 8.1 the amount of passes the free version can run has been limited to 4.
 
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