MemTest64 Memory Locking Failed: 3 Ways to Get it Working

Running into the Memtest64 Memory Locking Failed error can be quite frustrating, especially when you’re trying to diagnose potential memory issues. Fortunately, there are several methods you can try to resolve this problem and get MemTest64 running smoothly.

How can I fix the MemTest64 memory locking failed error?

Before we try anything else, make sure you close any unnecessary applications to free up RAM. You can also try removing memory sticks and testing them one by one or resetting your BIOS to default.

1. Reduce the amount of allocated memory

1. Open MemTest64.
2. Navigate to the settings where you can allocate memory for testing.
3. Instead of selecting the maximum available memory, reduce it. Try setting it to about 50-60% of your total RAM.
   
4. Start the test and monitor the results.

2. Run MemTest64 in Safe Mode

1. Open the Start Menu and Power button. Press and hold Shift and while holding it, choose Restart.
   
2. Next, choose Troubleshoot and then Startup Settings. Click on Restart.
   
3. Once the PC restarts, select the desired version of Safe Mode by pressing the appropriate key.
   
4. After the Safe Mode starts, open MemTest64.
5. Allocate the desired amount of memory and start the test.

3. Check for page file usage

1. Press Ctrl + Shift + Esc to open Task Manager.
2. Go to the Performance tab. Check the Memory section for page file usage.
   
3. If page file usage is high, reduce the amount of memory allocated in MemTest64 or disable some background processes.
4. Run MemTest64 again.

If the issue persists, you can try using a different RAM stress test software and check if that helps.

By following these steps, you should be able to resolve the Memtest64 memory locking failed error and successfully test your system’s memory.

To learn more about this tool, don’t miss our guide on MemTest64 to learn what it can do and how to properly use it.