If you are experiencing the BSOD (Blue Screen of Death) error with the message “IRQL NOT LESS EQUAL” and the file name “AFD.sys” mentioned, then it is likely that there is an issue with the AFD.sys driver file in your Windows operating system. This error can occur due to various reasons such as outdated drivers, corrupted system files, or hardware issues.

Here are some steps you can take to fix the BSOD AFD.sys IRQL NOT LESS EQUAL error:

1. Update your drivers: Outdated or incompatible drivers can cause this error. You can update your drivers manually or use a driver update tool to automatically update them.

2. Run a system file checker: Corrupted system files can also cause this error. You can run a system file checker to scan and repair any corrupted files.

3. Check your hardware: Faulty hardware such as RAM or hard drive can also cause this error. You can run hardware diagnostics to check for any issues.

4. Perform a clean boot: Sometimes, third-party software or services can cause conflicts with the AFD.sys driver. You can perform a clean boot to start your computer with only essential services and programs.

5. Reinstall Windows: If none of the above steps work, you can try reinstalling Windows to fix any underlying issues with the operating system.

In conclusion, the BSOD AFD.sys IRQL NOT LESS EQUAL error can be caused by various reasons, but the above steps should help you fix the issue. If the problem persists, you may need to seek professional help.


In conclusion, fixing the BSOD AFD.sys IRQL NOT LESS EQUAL error may require some troubleshooting, but it is possible to resolve the issue. By following the steps outlined above, you can identify and fix the underlying cause of the error. If you continue to experience the error, don’t hesitate to seek professional help.

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