How to Troubleshoot RAM Issues with Windows Memory Diagnostic in Windows 11
RAM is your computer’s short-term memory. It stores data for apps you are currently using. If your RAM has bad sectors, your system may become unstable, freeze, or show blue screen errors. Running a Windows 11 Memory Diagnostic helps you find out if your hardware is failing.
Why? Because faulty RAM is a common cause of random PC performance issues and system crashes. What happens when done? You will know if your memory hardware is healthy or if you need to replace your RAM sticks to fix your computer.
How to run the Windows Memory Diagnostic (mdsched.exe)
Before you begin, note that this process requires administrator privileges. You must be logged in as an administrator to run this tool.
- Open the Start menu or use the search bar on the Taskbar.
- Type “Windows Memory Diagnostic” and select the app. You can also press Win + R and type
mdsched.exeto launch it directly.
When the tool opens, you will see two options:
- Restart now and check for problems (recommended): This restarts your PC immediately to start the test.
- Check for problems the next time I start my computer: This schedules the test for your next reboot.
Select the first option to begin. Your computer will restart into a blue screen environment. This is where the actual testing happens.
Advanced Scan Options
If you need a deeper check, press the F1 key during the diagnostic screen. You can choose between Basic, Standard, or Extended tests using the Tab key. The Extended test is the most thorough but takes much longer to complete. Press F10 to apply your settings and start the test.
How to find and interpret Event Viewer logs
Sometimes the Windows notification does not appear after the reboot. If you cannot find your results, you must check the Event Viewer.
- Right-click the Start button and select Event Viewer.
- In the left pane, expand Windows Logs and click on System.
- On the right side, click Filter Current Log.
- Check the box for MemoryDiagnostics-Results and click OK.
- Double-click the entry to see if any hardware errors were detected.
Summary
The Windows Memory Diagnostic tool is a vital utility for checking your PC’s health. If the test reports ‘No memory errors detected,’ your RAM is likely fine. If it reports ‘Hardware problems detected,’ you have a failing component that needs replacement. Always use the Event Viewer to confirm your results if the automatic notification fails to appear.
How long does the Windows Memory Diagnostic take to complete?
The test duration depends on your RAM size and the scan type selected. A standard test usually takes 15 to 30 minutes. However, if you choose the Extended scan option, it can take several hours to finish. Ensure your computer is plugged into power during this time.
Why are my Windows Memory Diagnostic results not showing up?
If the desktop notification is missing, the results are still saved in the system logs. You can manually view them by opening the Event Viewer, navigating to Windows Logs, selecting System, and filtering for the MemoryDiagnostics-Results source. This will show you the specific outcome of the memory test.
Is Windows Memory Diagnostic as effective as MemTest86?
The built-in Windows tool is excellent for quick, basic checks and identifying major hardware failures. However, MemTest86 is considered more advanced and thorough for professional troubleshooting. If the Windows tool reports no errors but you still suspect RAM issues, MemTest86 is the recommended next step.
What should I do if the tool finds hardware errors?
If the tool reports hardware problems, it means your RAM is physically failing. You should identify which stick is faulty by testing them one at a time. Once identified, you must replace the defective RAM module to restore system stability and prevent further data corruption or crashes.
Was this guide helpful?
About the Author
Richard
Tech Writer, IT Professional
Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.
No comments yet — be the first to share your thoughts!