How To Run Memory Diagnostics -

The PC will reboot into a blue diagnostic screen. By default, it runs a test.

Press and hold the until you see "Loading startup options." how to run memory diagnostics

If built-in tools show no errors but you still suspect hardware failure, professionals use . It is a "bootable" tool, meaning it runs outside of your operating system to ensure the OS itself isn't interfering with the test. The PC will reboot into a blue diagnostic screen

If a tool shows even a single red error, replace the RAM. If all tests pass after 4+ passes of MemTest86, your RAM is healthy—move on to testing your hard drive or CPU. how to run memory diagnostics