How To Run Memory Diagnostics _verified_ May 2026

Press Windows Key + R , type mdsched.exe , and hit Enter. Choose a Restart Option:

If the Windows tool doesn’t find anything but you still suspect issues, use . It is an industry-standard tool that runs from a bootable USB drive, allowing it to test your RAM without the interference of the operating system. Download: Get the free version from MemTest86.com . how to run memory diagnostics

Press and hold the until the startup options window appears. Press Windows Key + R , type mdsched

Release the key when a progress bar or language selection appears. Download: Get the free version from MemTest86

Pro Tip: Press to change the test mix to "Extended" if you want a more thorough (but slower) check.

The test can take anywhere from 10 minutes to an hour depending on your RAM capacity. How to see the results:

If any of these tests report "Hardware problems" or "Address errors," your RAM is likely physically damaged.