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How Can I Fix the UNEXPECTED_KERNEL_MODE_TRAP Windows 8 Error?

This Tutorial addresses:
How Can I Fix the UNEXPECTED_KERNEL_MODE_TRAP Windows 8 Error?

UNEXPECTED_KERNEL_MODE_TRAP is displayed in the Blue Screen of Death (BSOD). The error is mostly generated due to hardware failure or because of installation of inappropriate or incompatible device drivers. As with other Blue Screen of Death errors, a simple restart may resolve the issue. However if the problem persists, the computer must be restarted in safe mode and any newly installed device driver must be uninstalled to make Windows 8 computer run smoothly.

Another reason why a Windows 8 system might display UNEXPECTED_KERNEL_MODE_TRAP error may be because of dusty or carbon covered PCI components like external LAN cards, TV tuner cards, etc. In such cases, the devices must be disconnected from the computer, cleaned, and reconnected to the computer.

By default Windows 8 does not allow users to press F8 or Shift + F8 to enter into the advanced boot menu in order to start the operating system in safe mode. In order to start Windows 8 in safe mode, advanced boot menu must be enabled manually. After restarting in safe mode, the problematic device drivers can be uninstalled, and the compatible version of drivers can be downloaded and installed to resolve the issue.

How to Enable Legacy Advanced Boot Menu?

To enable legacy advanced boot menu in Windows 8, the instructions are given below:

  1. Restart Windows 8 computer and insert Windows 8 bootable media into optical media drive (CD/DVD Drive).
  2. On the displayed Windows Setup box, click Next.
  3. On the next page, click Repair your computer.
  4. On Choose an option screen, click Troubleshoot.
  5. On Troubleshoot screen, click Advanced options.
  6. On Advanced options screen, click Command Prompt.
  7. On the opened Command Prompt window type C: and hit Enter.
  8. On C: prompt, type BCDEDIT /SET {DEFAULT} BOOTMENUPOLICY LEGACY command, and press Enter to enable legacy advanced boot menu.



  9. Once the command executed successfully, type EXIT command to close the Command Prompt window.
  10. Back on the Choose an option screen, click Continue to restart Windows 8 computer.

  • How to Uninstall Problematic Device Drivers from Safe Mode?
    In order to start Windows 8 in safe mode and uninstall the problematic device drivers, step-by-step instructions given below must be followed:
    1. Restart the Windows 8 computer.
    2. As the system restarts, press F8 key continuously to display the Advanced Boot Options screen.
    3. On the Advanced Boot Options screen, make sure that Safe Mode is selected and press Enter to start Windows 8 computer in safe mode.



    4. Log on to Windows 8 computer with the administrator account.
    5. Click Desktop tile from the Start screen to go to the desktop screen.
    6. Once on the desktop screen, hover mouse to the bottom right corner of the window.
    7. From the displayed options, click Settings.
    8. On the Settings pane, click Control Panel.
    9. On the opened All Control Panel Items window, click Device Manager.
    10. On Device Manager window, expand the category of the problematic device.
    11. Once expanded, right-click the device driver that is to be uninstalled.



    12. From the context menu that appears, click Uninstall to remove the selected driver.
    13. On Confirm Device Uninstall box, click OK to confirm the uninstallation of problematic device driver.
    14. Wait till the selected driver is uninstalled and restart the Windows 8 computer normally if required.

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