: Windows shows less RAM in "About This PC" than you actually have installed. How to Use the Windows Memory Diagnostic Tool
Extended test with many passes is more thorough but takes hours.
Testing your memory is a critical first step in troubleshooting hardware stability. This guide covers how to run a memory test in Windows 11 using built-in tools and professional third-party alternatives. memory test windows 11
: If you have multiple sticks, try running the test again with only one installed at a time to identify which specific module is failing.
👉 Press Start. 👉 Type "Windows Memory Diagnostic." 👉 Hit Enter and restart. : Windows shows less RAM in "About This
In the right-hand panel, click and type "MemoryDiagnostics-Results" to jump straight to the log.
: Files or software you use frequently suddenly become unreadable. This guide covers how to run a memory
Here’s a step-by-step guide to test your RAM in using the built-in Windows Memory Diagnostic tool.
: This is the most direct route. Your computer will reboot immediately to start the scan.
1202 (Error). Information Level: Your RAM passed with no errors. Warning/Error Level: Hardware problems were detected. You may need to reseat or replace your RAM sticks. YouTube +4 Quick Comparison: Built-in vs. Third-Party Feature Windows Memory Diagnostic MemTest86 Setup Pre-installed in Windows 11 Requires USB boot drive Duration Fast (15-30 mins) Thorough (Hours) Ease of Use High Moderate/Advanced Would you like help interpreting a specific
: If you want a more thorough investigation, press F1 to change the test mix to Extended . Be prepared for this to take several hours. How to Check Your Results