Windows Memory Diagnostics Tool in Windows 10/8/7

Windows 10/8/7 has a Memory Diagnostic Tool which you can use to check for possible memory problems, including testing of the Random Access Memory (RAM) on your computer.

Windows Memory Diagnostics Tool

Windows Memory Diagnostics Tool

If Windows 10/8/7/Vista detects a possible memory problem, you will receive a notification. Click the notification to open it.

If you wish to run this Windows Memory Diagnostics Tool on demand, open Control Panel and type ‘memory‘ in the search bar. Click on ‘Diagnose computer memory problems’ to open it. Alternatively, you can also type ‘mdsched‘ in start search and hit Enter to open it.

Choose between two options for when to run the Memory Diagnostics Tool.

If you choose to restart your computer and run the tool immediately, make sure that you save your work and close all of your running programs. The Memory Diagnostics Tool will run automatically when you restart Windows. It might take several minutes for the tool to finish checking your computer’s memory.

Once the test is completed, Windows will restart automatically. If the tool detects errors, you should contact your computer manufacturer for information about fixing them, since memory errors usually indicate a problem with the memory chips in your computer or other hardware problem.

Advanced options for running the Memory Diagnostics Tool:

For most users, letting the Memory Diagnostics Tool run automatically is the recommended option. However, advanced users might want to adjust the tool’s settings. When the Memory Diagnostics Tool starts, press F1.

You can adjust the following settings:

  • Test mix. Choose what type of test you want to run: Basic, Standard, or Extended. The choices are described in the tool.
  • Cache. Choose the cache setting you want for each test: Default, On, or Off.
  • Psss count. Type the number of times you want to repeat the test.

Press F10 to start the test.

You may also want to try some Advanced Memory Diagnostic on Windows, with Memtest86+ and maybe check out some more PC Stress Test free software for Windows.

TIP: See this post if you receive Only part of a ReadProcessMemory or WriteProcessMemory request was completed message.

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Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.