Windows command reference
Windows Memory Diagnostic
Schedule the built-in Windows memory test, which restarts the PC and tests system memory before Windows loads normally again.
Risk: LowReviewed: 2026-09-17
mdschedWhen to use it
Use when repeated stop errors or instability make memory a plausible branch, or Microsoft troubleshooting specifically calls for a memory check.
When not to use it
Save work first because the test restarts Windows. A clean result is useful evidence but does not prove every hardware fault is impossible.
Primary reference