Jul. 17, 2019 / Updated by Bessie Shaw to Windows 10
UNEXPECTED_KERNEL_MODE_TRAP (error code 0x0000007F) is one of the Windows 10 errors that often show Blue Screen of Death (BSoD) and cause PC crashes and freezes. Windows 10 error message “UNEXPECTED KERNEL MODE TRAP” is a bug check indicating the CPU generated a trap and the kernel failed to catch the trap. The 0x0000007F blue screen typically occurs after the system changes, like the Windows 10 Creators Update or Windows 10 Fall Creators update 1709.
The UNEXPECTED KERNEL MODE TRAP blue screen error can be caused by many factors: component connectors covered in dust, faulty installed hardware or software, malware or virus, damaged system files, driver issues, etc. And these can also result in many other Windows 10 blue screen errors, like DRIVER_IRQL_NOT_LESS_OR_EQUAL (error 0x000000D1), INACCESSIBLE_BOOT_DEVICE error, Windows 10 VIDEO DXGKRNL FATAL ERROR, Driver Power State Failure, Internal Power error, etc.
It is necessary to fix UNEXPECTED KERNEL MODE TRAP after the Windows 10 upgrade or the Windows 10 anniversary update, and here are solutions for it.
Below are top 6 solutions to fix the UNEXPECTED_KERNEL_MODE_TRAP (error 0x0000007F) in Windows 10.
Shut down and disconnect the devices from the PC, and then check if the PCI components are covered in dust. If so, clean up the dust and reconnect them to the computer to see if the UNEXPECTED KERNEL MODE TRAP or error 0x0000007F recurs.
If you’ve added any hardware that causes the boot failure, remove it to fix Windows 10 UNEXPECTED KERNEL MODE TRAP. Also, make sure all the hardware is compatible with Windows 10. UNEXPECTED KERNEL MODE TRAP often appears on a PC that the BIOS, network cards, hard disk controllers, etc. are incompatible with the OS. To keep them up-to-date, you can find available updates on the hardware manufacturer’s websites.
If you are able to enter the Windows, do remember to check the software. It may be the software you’ve installed recently that causes the UNEXPECTED KERNEL MODE TRAP error, and you can perform a Windows 10 clean boot to resolve the issue.
UNEXPECTED KERNEL MODE TRAP blue screen can be caused by malware or virus infected files. So launch the malware protection program to take a scan on your PC and delete the malicious files.
Corrupted system files can also result in Windows 10 UNEXPECTED KERNEL MODE TRAP error, but you can use Windows System File Checker to scan for and repair damaged files.
1. Use Windows shortcut keys Win + X to launch the Jump List.
2. Select Command Prompt (Admin).
3. Type sfc /scannow into the dialog window and hit Enter.
The command will make the System File Checker to scan for corrupted system files that cause 0x0000007F blue screen.
Outdated or broken drivers will affect the communication between the system and the hardware, causing problems including UNEXPECTED_KERNEL_MODE_TRAP blue screen, mouse and keyboard not working, graphics error 43, unidentified network, etc. You can fix driver issues manually or use professional driver update utilities like Driver Talent, Driver Doctor, Driver Navigator, etc.
Here’s how to one-click update drivers with Driver Talent to fix the 0x0000007F blue screen.
Step 1. Scan the PC for outdated, missing or corrupted drivers.
Step 2. Click Update to download and install proper drivers.
Step 3. Restart the PC to make the newly installed drivers take effect.
Note: You may not be allowed to manually install drivers after the Windows 10 anniversary update (version 1607). For more information, see Fix: Driver Signature Issue in Windows 10 Anniversary.
You could also try to install the latest Windows 10 update to fix the unexpected kernel mode trap BSOD error. Do the following steps:
Step 1. Click the Start button and then click Settings.
Step 2. Click Update & Security.
Step 3. On the right, click Check for updates
The system will automatically install the latest Windows update available.
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Hope this article can help to fix the UNEXPECTED KERNEL MODE TRAP in Windows 10. If you still have questions on the Windows 10 UNEXPECTED KERNEL MODE TRAP error or the 0x0000007F blue screen, let us know by commenting below, or by clicking the left menu on this page, or by visting the OSToto Official forum please.
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