Press Windows Key + R , type mdsched.exe , and hit Enter. Choose a Restart Option:
As the computer turns on, repeatedly press your motherboard’s boot menu key (usually , F11 , F8 , or Esc ). Select the UEFI USB drive from the boot list. Step 3: Execute the Diagnostics
Random Access Memory (RAM) is your computer's short-term workspace. When it malfunctions, your entire system can become unstable. You might experience random blue screens, sudden reboots, or corrupted files. Testing your memory is the best way to rule out hardware failure before buying new components. This comprehensive guide explains how to run memory diagnostics on Windows and Mac systems using built-in and third-party tools. Signs You Need to Run Memory Diagnostics
MemTest86 will load its graphical user interface automatically. Press or select Start Test . 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.
Press on your keyboard to initiate Diagnostics mode. For Intel-Based Macs Turn off your Mac.
Once MemTest86 loads, it displays a graphical interface. Click or wait for the automatic countdown. Press Windows Key + R , type mdsched
You can still use Apple Hardware Test by holding the D key at startup, but for advanced testing, you can also create a bootable USB of MemTest86 (the same tool used for Windows) because Intel Macs are standard x86 machines.
Windows has a built-in tool that is highly effective for most users.
Keep the default settings, or press to change the test mix (Basic, Standard, or Extended) and cache options. Standard is sufficient for most users. Step 3: Find the Results Step 3: Execute the Diagnostics Random Access Memory
Note: The test cannot run while Windows is active because the OS is using the RAM. The computer must reboot into a special diagnostic environment.
Your PC will restart into a blue environment. By default, it runs a "Standard" test.
If the test finds a memory issue, it will provide a reference code (usually starting with PPM ). You can check these codes on Apple’s support site. What to do if errors are found?