How To Run Memory Diagnostics -

Once finished, Windows will reboot. The results don't always pop up automatically. To see them:

Double-click the entry marked (or Error ) to see if any issues were detected. Windows Memory Diagnostic Tool Help - Microsoft Q&A how to run memory diagnostics

: If you have two sticks of RAM, run the test with only one stick installed at a time. This helps you identify exactly which stick is broken so you don't have to replace both. Once finished, Windows will reboot