How to Troubleshoot a STOP 0x0000001E KMODE_EXCEPTION_NOT_HANDLED Error Message

This article describes how to troubleshoot a "STOP 0x0000001E KMODE_EXCEPTION_NOT_HANDLED" error message.

A "STOP 0x0000001E KMODE_EXCEPTION_NOT_HANDLED" error message is a common type of STOP error message you may receive on a Windows NT-based computer. A "STOP 0x0000001E KMODE_EXCEPTION_NOT_HANDLED" error message indicates that an error condition was detected by the kernel and Windows NT was unable to continue running because of this error condition. The types of problems that can cause a "STOP 0x0000001E KMODE_EXCEPTION_NOT_HANDLED" error message are very similar to the problems that cause a "STOP 0x0000000A" error message, such as bad pointers, invalid addresses and other types of access violations. The STOP 0x0000001E bug check identifies an error that occurred in a section of code where no error handling routines exist. Note that most exceptions are generated directly in the section of code that is running.

The top four lines of a STOP 0x0000001E generally appear as: The four hexadecimal parameters after the STOP code (0xAAAAAAAA, 0xBBBBBBBB, 0xCCCCCCCC, 0xDDDDDDDD) have the following meanings:

• 0xAAAAAAAA is a code that identifies the exception that was not handled.
• 0xBBBBBBBB is the address at which the exception occurred.
• 0xCCCCCCCC is the first parameter of the exception, and sometimes this is another address in code.
• 0xDDDDDDDD is the second parameter of the exception, which can vary in meaning.

Interpreting the Parameters

Usually the exception address identifies the driver or function that caused the problem. Always note this address and the date of the driver or image that contains this address.

The first parameter is a Windows NT error code, and all error codes are defined in the Ntstatus.h file (which can also be found in the Windows NT 4.0 SDK). The first parameter tells you the type of error.

The second parameter is also important because it tells you in what code module the error occurred. This can frequently point to an individual driver or piece of hardware that is at fault, which will generally be listed on the third line of the STOP screen.

The last two parameters vary depending upon the exception that has occurred. Typically, you can find a description of the parameters included with the name of the error code in the Ntstatus.h file.

If there where no parameters to the error code, these will be 0x00000000.

For example, in the following STOP error message, an access violation (0xC0000005) occurred in module Srv.sys, which is the kernel mode server service: Note that no parameters went with this error code.

How to Troubleshoot a "STOP 0x0000001E KMODE_EXCEPTION_NOT_HANDLED" Error Message

1. Try to replace the driver that is identified in the STOP error message, either with a known good copy from your installation media, or with an updated version from the manufacturer.
2. Disable the driver that is identified in the STOP error message or any newly installed drivers.
3. Verify that any new hardware or software is properly installed. Disconnect the new hardware or replace it to see if this resolves the issue.
4. If you have a video driver that was not supplied with the operating system, try switching to the standard VGA driver or a driver that is compatible with the operating system.
5. View the following Microsoft Hardware Compatibility List Web site to verify that all your hardware and drivers are compatible with the operating system:
   http://www.microsoft.com/whdc/hcl/default.mspx (http://www.microsoft.com/whdc/hcl/default.mspx)
6. Run any system diagnostics that are supplied by your computer manufacturer, especially a RAM check. If this is a new installation of the hardware or software, contact the manufacturer for any requires updates for drivers or firmware.
7. Disable all filter drivers, such as remote control software, antivirus programs, backup programs, and so on.