Memory Checker Windows 11 [portable] 【2026 Edition】

Windows Memory Diagnostic is a built-in tool in Windows 11 that checks your computer's RAM (Random Access Memory) for errors. It helps identify if your RAM is faulty or not.

Press Win + R , type mdsched.exe , and hit Enter. memory checker windows 11

Running a memory check can help you:

The Windows Memory Diagnostic tool is a free, built-in utility in Windows 11 that tests your computer's memory for errors. It checks for problems with your RAM (Random Access Memory) modules, which can cause system instability, crashes, and data corruption. The tool uses a combination of algorithms and tests to identify faulty memory modules, allowing you to replace them and prevent future issues. Windows Memory Diagnostic is a built-in tool in

Go to Settings > System > Troubleshoot or search for "memory" in the Settings search bar. Once the tool opens, you must choose between two options: Running a memory check can help you: The

Once your PC restarts, it enters a blue diagnostic screen. By default, it runs a test, but you can press F1 to change settings: How to Use Windows Memory Diagnostic | Microsoft Surface