Running the Windows Memory Diagnostic Tool on Windows 11/10

If your computer has been acting strangely with random crashes, freezing apps, or unexpected restarts, the issue might not be software-related at all. One of the most common hidden causes is faulty or unstable RAM (Random Access Memory). Fortunately, Windows 11 includes a built-in utility designed specifically to check your system’s memory for problems.

The Windows Memory Diagnostic Tool is a simple yet powerful feature that scans your RAM for errors and helps you identify whether your hardware is causing system instability. The best part is that you do not need any third-party software to run it.

In this guide, you will learn exactly how to use the tool step by step, even if you have never done hardware diagnostics before.

Does Windows 11 have a memory diagnostic tool?

Yes, Windows 11 comes with a built-in utility called the Windows Memory Diagnostic Tool. This tool has been part of Windows for years and continues to be included in the latest version of the operating system.

It is specifically designed to detect memory-related problems such as faulty RAM modules, incorrect timings, or hardware instability. When you run the tool, your computer restarts and performs a series of tests before Windows loads again.

Unlike third-party tools, this utility is already integrated into the system, making it easy to access and safe to use without additional downloads. It is ideal for users who want a quick and reliable way to check for memory issues.

What does the Windows Memory Diagnostic Tool do?

The Windows Memory Diagnostic Tool offers several useful features that make it effective for identifying RAM problems.

One of its main strengths is its ability to run tests outside the normal Windows environment. Since the system reboots into a diagnostic mode, it can analyze memory without interference from background processes.

The tool provides multiple testing modes. The default mode is sufficient for most users, but there are also extended testing options that perform more detailed scans. These advanced tests take longer but can detect deeper issues.

Another important feature is automatic error reporting. Once the scan is complete and your system restarts, Windows will display the results through a notification. You can also review the results manually using the Event Viewer if needed.

It also allows you to customize test passes and memory patterns, which is useful for more advanced troubleshooting.

Overall, the tool is reliable, easy to use, and does not require any technical expertise to get started.

Running the Windows Memory Diagnostic Tool on Windows 11 or 10 to Diagnose Errors

To run the Windows Memory Diagnostic Tool on Windows 11 or 10, open the Start menu, search for Windows Memory Diagnostic, and select Restart now and check for problems. Your computer will reboot and automatically begin scanning your RAM for errors. Once the test is complete, Windows will restart and display the results.

Let’s go deep!

Step 1: Open the Windows Memory Diagnostic Tool

To begin, click on the Start menu in Windows 11. In the search bar, type Windows Memory Diagnostic. As you type, you will see the tool appear in the search results.

Click on the tool to open it. This step is simple but important, as it ensures you are launching the correct built-in utility instead of downloading unnecessary third-party tools.

If you prefer another method, you can also press Windows + R, type mdsched.exe, and press Enter. This command directly opens the memory diagnostic tool.

Step 2: Choose When to Run the Scan

After opening the tool, you will see a small window with two options.

The first option is Restart now and check for problems. This option immediately restarts your computer and begins the memory test. It is recommended that you be ready to proceed and have saved all your work.

The second option is to check for problems the next time I start my computer. This is useful if you are currently busy and want to schedule the scan for later.

For most users, selecting the first option is the quickest way to diagnose memory issues.

Step 3: Save Your Work and Restart Your Computer

Before proceeding, make sure all your files and applications are saved and closed. Since the diagnostic tool requires a restart, any unsaved work will be lost.

Once you confirm your choice, your computer will restart automatically. There is no need to manually shut down or reboot your system. The tool will take over the process.

Step 4: Let the Diagnostic Test Run

After the restart, your system will boot into the Windows Memory Diagnostic environment. You will see a blue screen displaying the progress of the test.

The tool will begin scanning your RAM using a series of tests. You will notice information such as test pass count, status, and progress percentage.

By default, the standard test runs automatically. If you want to access advanced options, you can press F1 during the test. This allows you to switch between basic, standard, and extended modes.

For beginners, it is best to stick with the default settings unless you suspect serious memory issues.

Step 5: Wait for the Test to Complete

The scan duration depends on your system’s memory size and test type. Systems with more RAM or extended testing modes will take longer to complete.

It is important not to interrupt the process. Let the test finish to ensure accurate results. Interrupting the scan may lead to incomplete or unreliable diagnostics.

Once the test is finished, your computer will automatically restart.

Step 6: Check the Test Results

After your system boots back into Windows 11, you should see a notification displaying the results of the memory test.

If no errors are found, your RAM is likely functioning properly. However, if errors are detected, it indicates a problem with your memory hardware.

If you miss the notification, you can manually check the results by opening Event Viewer. Navigate to Windows Logs, then System, and look for entries related to MemoryDiagnostics Results.

This step is important because it confirms whether your system’s memory is healthy or needs attention.

FAQs

What does the Windows Memory Diagnostic Tool do

The Windows Memory Diagnostic Tool scans your computer’s RAM to detect errors, corruption, or hardware issues that may cause system instability.

How long does the memory test take

The test usually takes between 5 minutes and 30 minutes, depending on your system and selected test type. Extended tests may take longer.

Can I use my computer during the test?

No, the test runs before Windows loads, so you cannot use your computer during the scan.

What should I do if errors are found?

If errors are detected, you may need to replace your RAM or test individual memory modules to identify the faulty one.

Is this tool enough for detecting all memory issues

The built-in tool is reliable for most users, but advanced users may use third-party tools for deeper analysis.

Will running the test delete my data

No, the diagnostic tool does not affect your files or data. It only scans your memory for errors.