| Tool | When to use | Time needed | Reliability | |------|-------------|-------------|--------------| | Windows Memory Diagnostic | Quick check before bed | 20 min | Medium | | MemTest86 | Confirmed or intermittent crashes | 4–12 hours | Very high | | HCI MemTest | Testing within Windows | 2–8 hours | High | | UEFI onboard diags | No USB available | 30 min | Medium |
How to Run Memory Diagnostics: A Complete Guide to Fixing RAM Issues run memory diagnostics
Best for: Thorough, reliable testing (used by hardware pros). | Tool | When to use | Time
If you're on a Mac, the process is slightly different depending on whether you have an Intel chip or Apple Silicon (M1/M2/M3). For Apple Silicon (M-Series): Shut down your Mac. Turn off your PC, unplug it, open the
Turn off your PC, unplug it, open the case, and physically remove and re-insert the RAM sticks. Sometimes dust or a loose connection is the only problem.
Windows has a hidden gem called the tool. It’s free, pre-installed, and very effective. How to use it:
Your computer will restart into a blue-screen environment (not the scary kind). It will automatically start the "Standard" test.