How to diagnose memory using Memory Diagnostics Tool in Windows 10

Your PC's memory (RAM) is a very crucial component. If the RAM chip goes bad or develops too many errors your PC will start crashing, hanging and eventually become unusable until you replace the RAM. In many cases, a defective RAM module continues to work sometimes but causes sudden issues occasionally. This behaviour is very annoying as your PC can crash suddenly but it is hard to diagnose such a memory issue. Fortunately, Windows 10 comes with a built-in memory diagnostic tool. Let's see how to use it to know for sure if the memory is defective.

The Windows Memory Diagnostic Tool performs a series of intensive memory tests. If all of them succeed, then the PC's RAM chip can be considered problem-free.

To run the Windows Memory Diagnostic tool, you need to do the following.

  1. In the Start menu, go to All Apps -> Windows Administrative Tools -> Windows Memory Diagnostic: Windows 10 start Windows Memory Diagnostic Tip: see How to navigate apps by alphabet in Windows 10 Start menu.
    Alternatively, you can press Win + R shortcut on the keyboard and type the following command in the Run box:

    mdsched.exe

    Windows 10 start mdsched

  2. Windows Memory Diagnostic will appear on the screen.
    Click "Restart now and check for problems" to start checking your RAM. Restart now and check for problems

After restarting, Windows 10 will start the standard set of memory tests. Windows 10 run memory diagnostic
You can change the current set of tests with the F1 key. You can choose from basic, standard and extended set of tests.
After Windows 10 completes the RAM check, it will restart your PC automatically.
You can find the results of the memory check in Event Viewer. Under Windows Logs -> System, look for events which have "MemoryDiagnostics" in the Source column. Windows 10 Memory Diagnostic Results

That's it. This is a sure way to know if your PC's memory is going bad or if the crashes and hangs you may be experiencing are caused by some other defective hardware.

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