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Test RAM with memtest.org MemTest86+

xilolee

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Screenshot

mt86b.jpg



Notes:
The steps to create CD/USB bootable media were originally posted by admin Tekno Venus.
I expanded them and then added also other users' experiences.


  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 (Recommended)

    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.
    To access the boot menu, reboot your computer.
    During the initial stages of the boot process, press the applicable key as prompted.
    Select the USB stick, or the CD/DVD disc, with MemTest86+ on it.
    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).​
  3. If the program won't start after a few of seconds, and you'll be redirected to the boot menu, you'll have 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).
    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 can't find CSM, it could be necessary to disable the Fast boot feature (in your BIOS settings).
    If you still can't find it, try to also disable the Secure boot feature.
  4. Wait a few of seconds and MemTest86+ will be available on your screen.
    You can use the letters between parenthesis to access its menus.
    Note:
    In version 5.01, Multi-Core (SMT) testing was introduced.
    This is a feature designed to speed up test times.
    To enable this feature, press the F2 key within a few seconds of booting into MemTest86+.
    BTW, it seems there is a bug linked to this new feature, hence I do not recommend it.​
  5. Main menus:
    • Esc key: to exit the program
    • C key: to enter in configuration
    • SP (scroll lock key?)
    • CR (scroll unlock??)
  6. Wait until it reaches at least 8 passes or until an error appears.
    This test could take few hours.
    Added by Philc43: as an example, on some systems with 32GB RAM could take 1-2 days.
    In this case it can be an advantage to breakdown the testing into steps of one or two modules at a time and run the tests overnight.​
  7. 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).
 
Last edited:

philc43

BSOD Academy Instructor, BSOD Kernel Dump Expert
Joined
Jul 7, 2017
Posts
123
Location
Cambridge, UK
Thanks for this updated version. Could I also suggest you add a comment about the length of time it takes? For example a 32GB system could take 1-2 days on some systems. In this case it can be an advantage to breakdown the testing into steps of one or two modules at a time and run the tests overnight.

Also note that 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.
 

RepairandRestore

Well-known member
Joined
Dec 17, 2015
Posts
205
Location
Bulgaria sofia
Nice guide.
The only thing I would add is every live CD/DVD which is created by Linux will have included the Memtest86.
I love the fact you have explained the booting sequences that is something most people might miss when they trying to boot.
Again great work I love the guide. :thumbs_up:
 
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