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Fatal Error Solutions
     
 

A machine check exception occurred just...

STOP: 0x000000FB

 
  Description  
     
 

Likely there is a problem with the CPU harware.

Some versions of Windows may show the description as "RECURSIVE_MACHINE_CHECK".

This is a fatal Windows error, typically called a Stop message, Bug Check, or more commonly the Blue Screen of Death (BSoD). The system is in a forced reboot state. Any unsaved work is likely lost.

 
   
  Sample Screen  
     
 

A problem has been detected and Windows has been shut down to prevent damage to your computer.

A machine check exception occurred just after processing a previous machine check, but before an exit from the machine check code could be completed.

Technical Information:

*** STOP: 0x000000FB

Beginning dump of physical memory
Physical memory dump complete.

Contact your system administrator or technical support group for further
assistance.

 
 
Text may appear differently depending on where the error occurs.
Additional technical information (hex values) specific to a machine are not shown.
 
   
  Key Facts  
     
 
Full Title
  A machine check exception occurred just after processing a previous machine check, but before an exit from the machine check code could be completed. 

Stop Code
  0x000000FB 

Type
  Fatal 

occurance meter
Windows
  Vista, 2008, 7, 8

Vendor
  Microsoft Corporation
 
   
  Solutions and Fixes  
     
 
  date Votes Ratings
Fix the Processor
7
    Add    Flag
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Test that processor is functioning correctly or replace the processor.
 
   
 
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  FaultWire Staff
Posted: 2-Sep-2009
 
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Fix Thermal Problems
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If the problems only occur after the system has warmed up and never occurs after you turn on a cold system (i.e. has been off for at least 30 minutes), the parts may be getting too hot and are failing.

Often this kind of problem is related to poor air-flow through the PC. Desktops usually have between 3 and 5 fans. If any fan fails, runs slowly, or if the vents are blocked, internal high temperatures can cause all sorts of odd behavior and BSoD messages.

While the system is powered on, put you hand near the exhaust fans at the back and confirm you feel a warm airflow. If there is no airflow or it is very hot, it's a good bet you have fan problems. Also check the inlets and be sure they are clear of dust and debris. If you have pets, check if fur is blocking the inlet vents.

If you are comfortable opening your PC, turn off the computer and open it up. With the insides in good view, re-apply power and turn it back on. Check that each fan is working properly and they are not clogged with dust.

Be sure to check the CPU fan and the fan inside the power supply. Also many video adapters have their own small fan. Replace any slowly turning or defective fans. Also be sure no cables are too close to the fan blades, as they can limit airflow, or worse - stop the fan if they hit the blades.

Check if the processor heat sink/fan assembly is properly attached to the processor chip. It should not be loose and should be clamped tightly to the the processor.

If the fans are all working and airflow is good, you may have a defective CPU, memory or other hardware component.

 
   
 
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  FaultWire Staff
Posted: 4-Oct-2008
 
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Also see our list of common Fatal Error Solutions.

 
 
 
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  Vendor Summary  
     
 
Vendor
  Microsoft Corporation (more info...)

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Phone
1-425-882-8080
1-800-642-7676

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    While BSoD fatal stop errors are identified by Microsoft Windows, they are often caused by non-Microsoft applications, drivers and hardware issues.  
   
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