How To Run Memory Diagnostics May 2026

Blue Screen of Death (BSOD)

Running memory diagnostics helps identify faulty hardware causing system instability, such as the , random crashes, or file corruption. Both Windows and macOS include built-in tools to scan physical RAM for errors. Windows Memory Diagnostic

Method 4: Linux – Memtest86+ (via GRUB)

Windows Key + R

Running the Windows Memory Diagnostic tool is the most direct way to check for RAM errors on your PC. It identifies hardware faults that cause blue screens, freezes, or system crashes. 🛠️ How to Start the Diagnostic Save all your work and close any open programs. Press , type mdsched.exe , and hit Enter . how to run memory diagnostics

• Every 6 months: Run the Windows Memory Diagnostic (quick pass) as part of routine maintenance.
• After a power surge or outage: Power fluctuations can corrupt RAM cells.
• After installing new RAM: Always run MemTest86 for 4 passes before assuming your new purchase works.
• When buying a used PC: Run an overnight MemTest86 before handing over cash.