Jan. 04, 2018 / Updated by Bessie Shaw to Windows 10
Unexpected Kernel Mode Trap blue screen error, also known as code 0x0000007F error, starts irritating Windows users after the Windows 10 Fall Creators Update.
As a bug check, UNEXPECTED_KERNEL_MODE_TRAP BSoD error happens when the CPU produces a trap but the kernel catch the trap unsuccessfully. The 0x0000007F blue screen can also be the result of hardware failure, program conflict or incompatible driver.
Usually, you may encounter Unexpected Kernel Mode Trap BSoD during your computing, but the laptop or desktop will automatically restart after the fleeting blue screen. If the blue screen appears accidentally after the Fall Creator Update, then you can ignore the bug and continue your office work after the restart. But if you are in the trap of 0x0000007F BSoD again and again, you need to take some actions to fix the Unexpected Kernel Mode Trap bug check.
Here we've had top 3 methods for you to troubleshoot the blue screen problem caused by the UNEXPECTED_KERNEL_MODE_TRAP.
Note: If you cannot access the desktop via the lock screen due to the BSoD, then you need to enter the Safe Mode to get the error fixed. Here's how to boot into the Safe Mode:
Step 1. Press and hold the power button of your PC to shut down, and then power on.
Step 2. Repeat Step 1 and on the next attempt, you'll enter the Recovery screen.
Step 3. Click the on-screen options in order: Advanced repair options > Troubleshoot > Advanced options > Windows Startup Settings > Restart.
Step 4. Hit the F4/F5 key to Enter Safe Mode (with Networking).
The Unexpected Kernel Mode Trap BSoD often occurs after some Windows update, like Windows 10 Anniversary Update, Windows 10 Creators Update, Windows 10 Fall Creators Update, etc. The bug check also irritates you after you install some applications or hardware devices. So you can try uninstalling the Windows update/software/devices you added recently to see if it can release your pain.
1. Go to Settings > Update & security > Windows Updates > Update history to check the recently installed Windows updates. Remove the update that may cause the Unexpected Kernel Mode Trap bug check.
2. Use Windows shortcut keys Win + X > Programs and features to select programs that probably trigger the blue screen and uninstall them.
3. Unplug those external devices, like a USB drive, a printer, a card reader, etc. and perform a restart to see if the 0x0000007F BSoD still persists.
Device drivers are updated during the key Windows 10 update, but the Fall Creators Update installation may fail to install some hardware device driver updates. Thus the outdated or corrupted drivers will affect the communication between the OS and the hardware devices, and then will provoke BSoD such as Unexpected Kernel Mode Trap blue screen, INACCESSIBLE_BOOT_DEVICE blue screen, UNEXPECTED_STORE_EXCEPTION blue screen, etc.
In this case, you can use Driver Talent, the professional driver manager, to help repair faulty drivers and resolve the 0x0000007F bug check.
Only 3 easy steps troubleshoot the blue screen issue with Driver Talent:
1. Launch Driver Talent and click the Scan button to detect the PC for incompatible drivers.
2. Click the Repair or the Update to download and install proper drivers for Windows 10 Fall Creators Update.
3. Reboot to make the driver changes take effect.
Note: To prevent your laptop or desktop from other driver crashes, it is recommended to backup all the drivers.
The SFC and DISM command lines also help to get the Unexpected Kernel Mode Trap blue screen error fixed.
1. Enter cmd into the taskbar search box.
2. Right-click the Command Prompt and select Run as administrator.
3. Type the command: sfc /scannow
4. Hit the Enter key.
If everything is fine, it will display “Windows Resource Protection did not find any integrity violations.” But if you have “Windows Resource Protection found corrupt files but was unable to fix some of them”, you need to follow Step 2 and run DISM command.
1. Launch Command Prompt (Admin).
2. Enter the command: DISM /Online /Cleanup-Image /RestoreHealth
3. Press the Enter key.
Wait until the scan completes. Then restart your PC to run SFC/SCANNOW command again to fix the Unexpected Kernel Mode Trap BSoD.
If the above-mentioned methods did not fix your Unexpected Kernel Mode Trap bug check after the Windows 10 Fall Creators Update, please comment below or click the support menu on the left side for further assistance. Any other Fall Creators Update-related issues, please go to Windows 10 section or our blog for solutions.
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