4 Ways To Fix Unexpected Kernel Mode Trap Error


The UNEXPECTED KERNEL MODE TRAP error is probably a delusion that affects Windows 10, Windows 8, and Windows 8.1 Systems, and you can fix the unexpected Kernel mode trap. The error means that the CPU of the concerned device has undergone a catch which the heart of the device could not cope with; Another cause may be that the system has reached an irreparable condition. The extreme reason behind these may be the non-performance of the hardware or inconsistent memory, or defective RAM.

The UNEXPECTED KERNEL MODE TRAP error appears as a blue screen on the concerned device. The error generally combines with the driver of the system or the system’s memory and opens up associated with the 0x0000007F stop code.

It is not difficult to overcome the Unexpected Kernel Mode Trap Error if the accurate reason or device associated with the error is discovered.
Once the cause is discovered, you can fix the unexpected Kernel mode trap, and it’s done.

Four Ways to Fix Unexpected Kernel Mode Trap

Method 1:-

  • Detach all the external appliances like those of the devices such as hard drives, Printers,
  • Scanners, USB drives, Modem, etc., excluding the mouse and the keyboard.
  • After disconnecting all the external devices, boot up the principal device.
  • Check if this has rectified the concerned error.
  • If yes, then connect back the external devices one by one.
  • Keep checking the system repeatedly when adding back the external devices to locate the hardware behind the error.
    The hardware responsible for the error must be updated so that this doesn’t happen again.

Method 2:-

Another possible cause for this kind of error can be the association of mismatch drivers. Once the cause is found, it is easy to fix the unexpected Kernel mode trap. The solution to this can be the use of the Windows Memory Diagnostic Tool. Sometimes, the device has been connected to a new RAM, which has a minimal or no match with the in-built parts of the computer.

windows memory diagnostic tool
windows memory diagnostic tool


The easiest way to check whether this mismatch is the reason behind the error is by removing the RAM and then boot the computer and check whether the error still exists.
If not, try to route a check using the Windows Memory Diagnostic Tool on the system’s memory.
If still the error persists, then follow the steps below:-

  • Press Windows key + R and type “mdsched.exe

    dialog box
    dialog box
  • Click on “Restart now and check for problems.”
  • Wait for the process to run completely, and your PC will reboot properly.

Method 3:-

Among the many ways to fix unexpected kernel mode trap error, the simplest is to re-course the existing drivers. One can even choose to uninstall new drivers and install them again.

Follow the steps mentioned below to carry on with the action-

  • Press Windows key + R and enter “devmgmt.msc

    run dialog box
    run dialog box
  • Open the context menu and right-click on the new driver. Update or Uninstall the driver as per your choice.

    update driver
    update driver

This adds to the correction of the concerned error leading towards efficient functioning of the device.
But still, if the problem persists, skip to automatically update all the outdated drivers at once using the following steps-

  • Go to Control Panel.

    control panel
    control panel
  • Go to Hardware & Sound.

    hardware and sound
    hardware and sound
  • Select Devices and Printers.

    devices and printers
    devices and printers
  • Right-click on the PC name.
  • Click “Device installation settings” and select Auto-Download.

These actions have helped a variety of users of the Windows PC to correct the Windows 10 errors.

Method 4:-

The Unexpected Kernel Mode Trap error occurs on old system software and a newly installed system.

If such happens, then start by checking whether all the external devices, such as hard disk drives, USB adapters, Scanners, Printers, etc., are in harmony with the existing version of the newly installed Windows.

The compatible match of devices is available on the Internet and in the Windows Compatible Products List.

If the compatibility check confirms that the hardware matches the Windows version, stick towards updating the controllers and network cards.

For updating, unfold the Device Manager, go to Network adapters and Storage controllers and update the drivers,

If the error demands, upgradation of the Basic Input Output System, follow the steps mentioned below and fix unexpected Kernel mode trap-

  • Inspect the current version of the Basic Input Output System(BIOS) in Windows.
  • Choose “Windows + R” keys.
  • In the pop-up box, enter “msinfo32

  • Click the OK button and open the System Information.

    system information
    system information
  • Check the BIOS version.
  • If the BIOS version is outdated, then download the new and updated BIOS version from the concerned manufacturer’s website.
  • Connect the new USB consisting of the latest BIOS version.
  • Enter the BIOS to upgrade the firmware.
    And therefore, you can fix the unexpected Kernel mode trap.


What is the cause of kernel trap?

An unexpected kernel mode trap BSOD might occur if your device drivers are incompatible or out of date. Overclocking your CPU or GPU is also a possibility.

In kernel mode, what happens?
The executing code has complete and unrestricted access to the underlying hardware under Kernel mode. Any CPU instruction can be executed, and any memory address can be referenced. Kernel mode is primarily designated for the operating system’s lowest-level, most trusted functions.


This error can be fixed by the above 4 methods easily when the steps are followed correctly. Hope this article on how to fix unexpected Kernel mode trap guides you to fix the problem and is helpful to you. Thank you!