Windows Memory Diagnostic |best| May 2026

Use the arrow keys to navigate, Tab to switch sections, and F10 to save and start the test.

Random Access Memory (RAM) is one of the most critical components in your computer. It acts as the system’s short-term memory, holding data that the CPU needs to access quickly. When RAM starts to fail, the consequences can be baffling and severe: random crashes, Blue Screens of Death (BSODs), file corruption, and application freezes. windows memory diagnostic

| Option | Choices | Recommendation | | :--- | :--- | :--- | | | Basic, Standard, Extended | Standard is sufficient for most issues. Use Extended if you suspect rare, intermittent errors. | | Cache | Default, On, Off | Leave on Default . Disabling cache makes tests slower but more thorough. | | Pass Count | 0–99 | Set to 2-4 passes for a reliable check. The default is usually 2. | Use the arrow keys to navigate, Tab to

By default, the tool runs the test mix. You will see a progress bar and a status message (e.g., "Pass 1 of 2"). While it runs, you can press F1 to access advanced options: When RAM starts to fail, the consequences can