How to fix UNEXPECTED_KERNEL_MODE_TRAP error on Windows 11/10

What is the UNEXPECTED_KERNEL_MODE_TRAP Error?

UNEXPECTED_KERNEL_MODE_TRAP error, often represented by the stop code 0x0000007F, signifies that the CPU generated a trap that the kernel is not able to catch. This trap can occur due to several reasons, including hardware failures, memory corruption, or incompatible drivers. Users facing this error will see their system abruptly halt and display the blue screen message, preventing normal operation until resolved. The UNEXPECTED_KERNEL_MODE_TRAP error is a common Blue Screen of Death (BSOD) issue that can affect both Windows 11 and Windows 10 systems. This error occurs due to hardware failure, incompatible firmware, or problematic drivers leading to a trap caused by the kernel. This comprehensive guide aims to provide insights into what triggers this error and offers detailed instructions to resolve it, helping users reclaim a stable and efficient operating system environment.

UNEXPECTED_KERNEL_MODE_TRAP error

0x0000007F error

Why It Appears

This error can be attributed to a variety of factors:

1. Faulty Hardware: Issues with your system’s hardware, such as a failing RAM module or an overheated CPU.
2. Driver Conflicts: Outdated or incompatible drivers can cause conflicts within the system.
3. Software Issues: Corrupt system files or software conflicts may also trigger this error.
4. Overclocking: Overclocking CPU or GPU beyond their capacity can lead to system instability.
5. Malware: In some cases, malware infections can cause system-level issues leading to BSOD errors.

Steps to Fix UNEXPECTED_KERNEL_MODE_TRAP Error

Step 1: Check for Hardware Issues

1. Test Your RAM: Use Windows Memory Diagnostic tool. Type mdsched.exe in the Start menu, run as administrator, and choose to restart your computer and check for memory problems.
2. Inspect Other Hardware: Ensure that all internal hardware components are properly seated and that your computer is not overheating.

Step 2: Update or Roll Back Drivers

1. Update Drivers: Open Device Manager, find any devices with a yellow exclamation mark, right-click them, and select Update driver.
2. Roll Back Drivers: If the error started after a recent driver update, select Properties > Driver tab > Roll Back Driver if available.

Updating each driver manually is time- and energy-consuming. If you are willing to save it and update drivers faster, we recommend using a special utility called Driver Booster from IObit. It has broad databases of drivers for all of the devices you need to maintain your PC. You can download it using the button below.

Driver Booster start screen

Driver Booster scan results

Driver Booster tools section

Step 3: Run System File Checker

1. Open Command Prompt as administrator.
2. Type sfc /scannow and press Enter. This command will scan and repair corrupt system files.

Step 4: Check for Software Conflicts

1. Perform a Clean Boot: Type msconfig in the Start menu, run as administrator, go to the Services tab, check Hide all Microsoft services, and click Disable all. Restart your computer.
2. Uninstall Recent Software: If the error occurred after installing new software, remove it through the Control Panel.

Step 5: Disable Overclocking

If you’ve overclocked your CPU or GPU, revert to the standard clock settings in your BIOS or UEFI firmware settings.

Step 6: Scan for Malware

Use Windows Defender or your preferred antivirus program to perform a deep scan of your system, removing any detected threats.

If you tried all the aforementioned solutions but nothing has worked out up until this moment, then the reason for the UNEXPECTED_KERNEL_MODE_TRAP error could lurk in malware. Malicious or unwanted programs are known to cause various damage or configuration clutter inside the system. This is why it is worth running a thorough scan to make sure it is not the actual case. You can use the default Windows Defender or try to install a more advanced antivirus developed by Malwarebytes – a trusted and talented group of experts constantly updating their software to fight off both local and global threats. You can download it now using the link below and get a 14-day trial of the ultimate antimalware experience completely for free. It is available for Windows 11, 10, 8.1, 8, and 7.

Malwarebytes main window

Malwarebytes settings

Malwarebytes scan results

Conclusion

The UNEXPECTED_KERNEL_MODE_TRAP error in Windows 11/10 can be daunting, but by following the steps outlined above, users can diagnose and potentially resolve the underlying causes. Patience and a methodical approach are key to troubleshooting this BSOD error. If problems persist, consider seeking professional assistance or contacting Microsoft Support for further guidance.