Are you noticing your Windows 11 PC running slower than usual, crashing unexpectedly, or showing blue screen errors? One of the most common causes could be faulty RAM (Random Access Memory). Luckily, Windows 11 comes with a built-in tool called the Windows Memory Diagnostic that helps detect and fix memory-related issues.
In this step-by-step guide, you’ll learn how to check Memory Diagnostic results in Windows 11, how to run the tool, interpret the results, and what to do if your computer’s memory has errors.
🧭 Quick Summary (Key Takeaways)
| Step | Action | Description |
|---|---|---|
| 1 | Run Windows Memory Diagnostic | Use Run dialog (mdsched.exe) to start the test. |
| 2 | Restart and scan your PC | Choose to restart now to let the test begin. |
| 3 | Wait for test completion | The scan runs automatically and restarts your system. |
| 4 | Check test results | Use Event Viewer to view memory test outcomes. |
| 5 | Troubleshoot memory errors | Replace faulty RAM or reseat memory sticks if errors appear. |
🧠 What Is the Windows Memory Diagnostic Tool?
Before diving into the steps, let’s understand what this tool actually does.
The Windows Memory Diagnostic Tool is a built-in utility in Windows 11 that tests your computer’s RAM for potential issues. If you’re experiencing crashes, freezes, or random reboots, this tool can help identify whether your memory hardware is to blame.
It performs two levels of tests:
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Basic Test — checks general memory errors.
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Standard/Extended Test — performs deeper scans for subtle memory issues.
💡 When Should You Use Windows Memory Diagnostic?
You should consider running this tool if your PC shows any of the following symptoms:
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Frequent Blue Screen of Death (BSOD) errors.
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Random freezes or restarts.
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Slow performance even with minimal apps open.
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Corrupted files or failed installations.
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Unexplained system crashes when running heavy programs.
These are classic signs of possible RAM malfunction, and running a diagnostic test is a smart first step.
⚙️ How to Run Windows Memory Diagnostic in Windows 11
Let’s start with how to launch the memory test before we check the results.
🪜 Step 1: Open the Windows Memory Diagnostic Tool
You can open it using any of these methods:
Option 1: Use the Run Command
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Press Windows + R to open the Run dialog.
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Type
mdsched.exeand hit Enter. -
A pop-up window will appear with two options.
Option 2: Use Windows Search
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Click on the Search icon (magnifying glass) on the taskbar.
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Type Windows Memory Diagnostic.
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Select it from the search results.
🪜 Step 2: Choose When to Run the Test
You’ll see two options:
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Restart now and check for problems (recommended)
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Check for problems the next time I start my computer
For immediate testing, click the first option.
💡 Save your work before restarting because your PC will reboot automatically.
🪜 Step 3: Wait for the Memory Test to Run
Once your computer restarts, it will automatically start scanning your memory.
You’ll see a blue screen showing progress and test status.
You can press F1 to open options and choose between:
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Basic
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Standard
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Extended
Use arrow keys to navigate and F10 to apply.
The test duration depends on the size of your RAM and test type—basic tests take a few minutes, while extended tests can take an hour or more.
🪜 Step 4: Let Windows Restart Automatically
After completing the memory test, your system will restart automatically.
Windows will attempt to display the results after booting up, but sometimes this message flashes too quickly or doesn’t appear at all.
That’s where checking the results manually becomes necessary.
🧾 How to Check Memory Diagnostic Results in Windows 11
Now let’s go through the main topic — viewing the results after the diagnostic test has run.
Here are a few reliable ways to check the report.
🪜 Method 1: Check Results Using Event Viewer (Recommended)
The Event Viewer stores detailed logs of the memory diagnostic results. Follow these steps:
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Press Windows + X and select Event Viewer.
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In the left sidebar, go to:
Windows Logs → System -
In the right pane, click Find (or press Ctrl + F).
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Type MemoryDiagnostics-Results and press Find Next.
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Double-click the result entry to open detailed information.
🧩 How to Interpret the Results
You’ll see one of the following outcomes:
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“The Windows Memory Diagnostic tested the computer’s memory and detected no errors.”
✅ Your RAM is healthy. -
“Hardware problems were detected.”
⚠️ Your RAM or memory slot may be faulty.
🪜 Method 2: View Results Using PowerShell
If you prefer a quicker, command-based method:
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Press Windows + X → select Windows Terminal (Admin).
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Type the following command and hit Enter:
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Review the output for test results.
This command directly fetches the latest diagnostic report from your system logs.
🪜 Method 3: Check via System Logs Using Command Prompt
You can also view logs using Command Prompt:
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Press Windows + S, type cmd, and run as Administrator.
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Enter this command:
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Review the displayed text for memory diagnostic results.
🧮 How to Analyze the Memory Diagnostic Results
Understanding the results can help you decide what to do next.
| Result Message | Meaning | Action |
|---|---|---|
| No errors detected | RAM is functioning correctly | No action needed |
| Hardware problems detected | RAM issues found | Test RAM modules individually |
| Test didn’t complete | Interrupted or failed scan | Re-run diagnostic |
| Unknown or blank result | Log unavailable | Use PowerShell or re-run test |
🔧 What to Do If the Memory Diagnostic Detects Errors
If the test reveals memory issues, follow these steps to troubleshoot.
🪜 Step 1: Reseat RAM Modules
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Shut down your PC and unplug all cables.
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Open your computer case or laptop back panel.
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Carefully remove and reinsert your RAM sticks.
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Restart and re-run the memory test.
🪜 Step 2: Test Each RAM Stick Separately
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If you have multiple RAM modules, test each one individually.
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This helps identify which stick is faulty.
🪜 Step 3: Clean RAM and Slots
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Use compressed air or a soft brush to clean dust.
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Dust can cause poor connection between RAM and motherboard.
🪜 Step 4: Replace Faulty RAM
If errors persist after reseating or cleaning, replace the defective RAM module.
💡 Use identical type and speed RAM for compatibility.
🪜 Step 5: Update BIOS and Drivers
Sometimes, outdated BIOS or chipset drivers can cause memory-related issues.
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Visit your motherboard manufacturer’s website.
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Download and install the latest BIOS and chipset updates.
🧰 Alternative Tools to Test Memory in Windows 11
While Windows Memory Diagnostic is reliable, advanced users may prefer third-party tools for deeper analysis.
| Tool | Description | Website |
|---|---|---|
| MemTest86 | Industry-standard memory testing software | www.memtest86.com |
| PassMark MemTest64 | Fast Windows-based RAM test tool | www.passmark.com |
| HCI MemTest | Detects subtle memory instability | www.hcidesign.com |
These tools often provide more detailed results and can test memory stability under different workloads.
⚡ Common Issues and Fixes During Memory Testing
| Problem | Cause | Solution |
|---|---|---|
| Test freezes mid-scan | Faulty RAM or overheating | Let system cool down and retry |
| No result after reboot | Log not recorded | Use Event Viewer manually |
| PC doesn’t restart | Power issue | Force restart manually |
| Too many false positives | Overclocked RAM | Reset BIOS to default settings |
🧩 Why Checking Memory Diagnostic Results Matters
Ignoring memory issues can lead to serious problems:
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Data corruption
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System crashes
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App instability
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Permanent hardware damage
By checking diagnostic results early, you prevent potential data loss and ensure your PC runs smoothly for years.
🗂️ Pro Tips for Maintaining Healthy RAM
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Keep your drivers updated.
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Avoid overclocking unless necessary.
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Ensure proper ventilation and cooling.
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Run Memory Diagnostic every few months.
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Handle RAM modules carefully when cleaning or upgrading.
🏁 Conclusion
Checking your Memory Diagnostic results in Windows 11 is an essential troubleshooting step when your PC behaves unpredictably. With just a few clicks, you can identify whether your RAM is healthy or failing.
If errors appear, reseat, clean, or replace the RAM — and always double-check with advanced tools like MemTest86 for confirmation.
By maintaining your memory hardware properly, you’ll enjoy faster performance, fewer crashes, and a longer-lasting PC.
❓ FAQs About Checking Memory Diagnostic Results in Windows 11
1. How long does Windows Memory Diagnostic take?
Typically, a standard test takes 5–15 minutes, while an extended test may take up to an hour depending on RAM size.
2. Why didn’t I see the memory test results after reboot?
Sometimes the results flash too quickly. You can manually check them via Event Viewer → Windows Logs → System → search for MemoryDiagnostics-Results.
3. Can I use my PC while running the Memory Diagnostic?
No. The test runs before Windows boots, so you can’t use your PC during the process.
4. Is the Windows Memory Diagnostic tool reliable?
Yes, but for deeper testing, advanced tools like MemTest86 or PassMark MemTest64 are more detailed.
5. Does a clean result mean my RAM is perfect?
Not always. Some issues appear under heavy loads or long-term use. If problems persist, try third-party tools or swap RAM modules to confirm.
✅ Key Takeaway:
Running and checking Windows Memory Diagnostic results helps you pinpoint memory issues before they escalate. Regular diagnostics ensure your Windows 11 PC remains stable, responsive, and reliable.