How to Repair IRQL_NOT_LESS_OR_EQUAL Error on Windows PC

If you’re playing games in Windows 10 and the IRQL_NOT_LESS_OR_EQUAL error keeps showing up on a blue screen, it can be frustrating. This error is probably caused by faulty drivers that are programmed to access inappropriate hardware addresses. To fix this error, simply try the solutions suggested in this post.

There are very effective solutions to fix this blue screen error. You may not need to try them all. Scroll down the list until you find the solution that is right for you.

What causes irql_not_less_or_equal?

  • Registry problems
  • Defective hardware
  • Hard drive fragmentation
  • Incompatible device drivers
  • Viruses and malware attacks
  • Incorrect installation of device drivers

How to fix irql_not_less_or_equal?

Investigate your memory and hardware

  1. Open the search function -> type memory diagnostics and open the Windows Memory Diagnostics utility.
  2. In the window that opens, select one of the two options available. The first option immediately restarts Windows and allows the system to check the memory.
  3. If it gives you an error, you’ve got your answer. Replace your computer’s memory, and everything will work normally again.
  4. However, if the check did not return any errors, the problem lies elsewhere.

Restore the registry to fix the corrupted files

  1. Go to Start -> type cmd -> right-click on Command Prompt -> select Run as administrator.
  2. Now type the command sfc /scannow
  3. Wait for the scan to finish and restart your computer. Any corrupted files will be replaced on reboot.

Run a full system scan

  1. Go to Start -> type defender -> double-click on Windows Defender to launch the tool.
  2. Select the shield icon in the left pane
  3. In the new window, click the Scan Options link.
  4. Enable the Full Scan option to run a full system scan for malware.

Start your computer in safe mode

  1. While holding down the Shift key, press the power on-screen button.
  2. Select the Restart option while holding down the Shift key.
  3. Select Troubleshooting -> Advanced -> Startup Options -> click Restart.
  4. Wait for Windows 10 to restart and select Safe Mode.
  5. Check if the problem persists.

Frequently Asked Questions

This is usually a memory-related error that occurs when a system process or device driver wants to access a memory address for which it does not have access rights.

An IRQL error is a memory-related error that often occurs when a system process or device driver attempts to access a memory address for which it does not have valid access rights.

  1. Start Windows.
  2. Press the Windows key and the C key to open the Charms panel.
  3. Click on Settings.
  4. Go to Change PC Settings.
  5. Select General.
  6. Click Advanced Startup.
  7. Click Restart now.
  8. Go to Troubleshooting.