Event ID 18: Microsoft-Windows-WHEA-Logger

Event ID 18: Microsoft-Windows-WHEA-Logger

Applies to:

Windows Server 2008, Windows Vista, Windows Server 2008 R2, Windows 7



Windows Operating System

Event ID:






Symbolic Name:

Boot Performance Monitoring


A fatal hardware error has occurred.

Reported by component: Processor Core
Error Source: Machine Check Exception
Error Type: Unknown Error
Processor ID: 1

The details view of this entry contains further information.



This error indicates that there is a hardware problem.   A machine check exception indicates a  computer hardware error that occurs when a computer's central processing unit detects a hardware problem.    

Note:  WHEA stands for Windows Hardware Error Architecture.  

Some of the main hardware problems which cause machine check exceptions  include:

  • System bus errors (error communicating between the processor and the motherboard) 
  • Memory errors that may include parity and error correction code (ECC) problems.   Error checking ensures that data is stored correctly in the RAM; if information is corrupted, then random errors occur.
  • Cache errors in the processor; the cache stores important data and code. If this is corrupted, errors often occur.
  • Poor voltage regulation (i.e. power supply problem, voltage regulator malfunction, capacitor degradation)
  • Damage due to power spikes
  • Static damage to the motherboard 
  • Incorrect processor voltage setting in the BIOS (too low or too high)
  • Overclocking
  • Permanent motherboard or power supply damage caused by prior overclocking
  • Excessive temperature caused by insufficient airflow (possibly caused by fan failure or blockage of air inlet/outlet)
  • Improper BIOS initialization (the BIOS configuring the motherboard or CPU incorrectly)
  • Installation of a processor that is too much for your motherboard to handle (excessive power requirement, incompatibility)
  • Defective hardware that may be drawing excessive power or otherwise disrupting proper voltage regulation

User Action

  • Update the BIOS and the drivers for the motherboard chipset.   
  • Update all the hardware drivers, if updates are available from your manufacturer. 
  • Check the temperature inside the computer to make sure your processor and related peripherals are not overheating.
  • Check the fan on your CPU to make sure it is properly attached to the CPU.
  • If you have overclocked your CPU,  reset your settings to the default settings. 
  • Make sure you power supply fan is working correctly

Related Information

WHEA Design Guide


WHEA -  Windows Hardware Error Architecture Overview



Leave a Comment
  • Please add 6 and 8 and type the answer here:
  • Post
Wiki - Revision Comment List(Revision Comment)
Sort by: Published Date | Most Recent | Most Useful
Page 1 of 1 (2 items)
Wikis - Comment List
Sort by: Published Date | Most Recent | Most Useful
Posting comments is temporarily disabled until 10:00am PST on Saturday, December 14th. Thank you for your patience.
  • Fernando Lugão Veltem edited Original. Comment: added toc and tags

  • Ed Price - MSFT edited Revision 5. Comment: Word wrap

Page 1 of 1 (2 items)