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Fatal Error Solutions
     
 

DRIVER_IRQL_NOT_LESS_OR_EQUAL

STOP: 0x000000D1

 
  Description  
     
 

A device driver has a bug and attempted to access invalid memory, the pagefile has been corrupted or there is a memory problem.

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.

DRIVER_IRQL_NOT_LESS_OR_EQUAL

If this is the first time you've seen this Stop error screen, restart your computer. If this screen appears again, follow these steps:

Check to make sure any new hardware or software is properly installed. If this is a new installation, ask your hardware or software manufacturer for any Windows updates you might need.

If problems continue, disable or remove any newly installed hardware or software. Disable BIOS memory options such as caching or shadowing. If you need to use Safe Mode to remove or disable components, restart your computer, press F8 to select Advanced Startup Options, and then select Safe Mode.

Technical Information:

*** STOP: 0x000000D1

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
  DRIVER_IRQL_NOT_LESS_OR_EQUAL 

Stop Code
  0x000000D1 

Type
  Fatal 

occurance meter
Windows
  2000, XP, Vista, 2008, 7, 8

Vendor
  Microsoft Corporation
 
   
  Solutions and Fixes  
     
 
  Date votes Ratings
Update Windows
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Microsoft has issued a hot fix (a special update) to fix this issue:

In Windows XP SP2 only, there is a hot fix for this issue (Microsoft article 916595).

 
   
 
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  FaultWire Staff
Posted: 5-Oct-2008
 
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Uninstall the Last Install
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If you can get the system up for more than a few minutes or can use safe mode, try removing the last installed software application or driver.

For removal of an application (Windows 8+)

  1. Press the Windows Key and X together, then  Control Panel, then Programs and Features.
  2. Select the software to uninstall and select Uninstall.

 For removal of an application (Windows 7 & Vista):

  1. Click on Start, Control Panel, then Programs and Features.
  2. Select the software to uninstall and select Uninstall.

For removal of an application (Windows XP):

  1. Click on Start, Control Panel, then Add or Remove Programs.
  2. Select the software to uninstall and select Remove.

To disable a driver:

  1. Bring up the system information dialog:

    On the keyboard, press the Windows key + Pause/Break.

       or

    Select Start, right click Computer and on the drop-down, select Properties.

  2. Click on the left side option Advanced system settings (7/Vista only).
  3. In System Properties, select the Hardware tab, then click on Device Manager button.
  4. Find the hardware/driver of interest (you may need to expand a choice at the "plus" graphic) and double click the choice.
  5. Select the Driver tab. Here you can perform a number of actions such as update the driver, roll Back the driver to an older version, disable or uninstall the driver.
  6. Click OK to exit, then close the Device Manager and other previously opened dialogs.
 
   
 
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  FaultWire Staff
Posted: 5-Oct-2008
 
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Fix Damaged Pagefile
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The page file may be corrupt. To fix this:

  1. Boot into the Recovery Console command prompt from the Windows boot installation CD/DVD.
  2. Delete the Page File, which is in the system root directory by typing: del pagefile.sys
  3. Next you need to run the check disk by typing: chkdsk /r
  4. Exit the recovery console and reboot into Windows.
  5. You'll need to create a new pagefile and/or verify the settings.
    For Windows 7, Vista and Server 2008:
    • Select Start, then right-click on Computer, and select Properties.
    • Select Advanced system settings.
    • In System Properties, select the Advanced Tab, and under Performance, select the Settings button.
    • In Performance Options, select the Advanced Tab. The lower box Virtual Memory shows the paging file size. If it is off or set wrong, you can change the options using the Change button. Typically the "Automatically manage ... " option is best.
    For Windows XP Server 2003:
    • Select Start, then right-click on My Computer, and select Properties.
    • In System Properties, select the Advanced Tab, and under Performance, select the Settings button.
    • In Performance Options, select the Advanced Tab. The lower box Virtual Memory shows the paging file size. If it is off or set wrong, you can change the options using the Change button. Use either System managed size or custom size.
 
   
 
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  FaultWire Staff
Posted: 3-Sep-2009
 
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Get the Latest Updates
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Install the latest Windows software updates. Don't forget to check for non-critical updates too!

To manually get updates, open Internet Explorer (you can't use a non-Microsoft browser for updates).

For IE 8 and later: Click on Safety, then Windows Update. Follow the instructions.


 

For IE 7 and older: Click on Tools, then Windows Update. Follow the instructions.


 
   
 
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  FaultWire Staff
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Get Latest Service Pack
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Microsoft has identified a problem with the OSes listed below that require updating to the current service pack to fix this issue:

In Windows XP, if this error occurs on shutdown with USB devices connected, you will need to install the current XP service pack (Microsoft article 839641).

In Windows XP, if this error occurs on startup, it is due to a bug in the ACPI power management code and you will need to install the current XP service pack (Microsoft article 839876).

 
   
 
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  FaultWire Staff
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Check Memory
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You may have a defective memory. This is even more likely if it only occurs when the system is cold or hot, but not all the time. Use a memory tester to confirm if it is defective or if you have spare memory, try replacement.

Windows 7 and Vista include a Memory Test program when booting from the Windows Installation DVD. Step-by-step instructions with screen shots are available at Using System Restore on 7/Vista/2008 as part of System Recovery.

Several software products that also provide memory and video diagnostics includes Fix-It Utilities Professional and SystemSuite Professional. Other diagnostic products include Eurosoft's PC Check and Iolo's System Mechanic.

Additional Memory Solutions:

  • Confirm all the memory is of the same type and speed. Many motherboards only work correctly when the memory is installed with matched sets and matched speeds.
  • If you added or changed your memory just before this problem occurred, try reverting to the prior memory configuration to confirm it's the source of the problem.
  • Check that the memory is fully seated in the sockets. Memory sockets often have side latches that need to be upright to indicate the memory is correctly locked in place.
  • Confirm the memory resides in the correct slots on the motherboard. You'll need to refer to the motherboard manual to confirm this. There is little consistency, even within a single vendor. Some systems require that memory is installed as matched pairs, but not always adjacent to each other!
  • It's also possible the memory problem is on the video card, as they often contain additional memory. The video card should be tested and/or try a different video card to see if the problem goes away.
 
   
 
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  FaultWire Staff
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Fix Software Bugs
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Check if this software bug applies to your system:

This error can occur if using multiple Mylex RAID controllers with the Dac2w2k.sys device driver. Mylex is now owned by LSI. You will need an updated RAID driver). (Microsoft article 316208).

 
   
 
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Get the Latest Drivers
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Check if you are using the latest hardware drivers, especially the chipset and video drivers. Older drivers are a common contributor to BSoD issues.

You can use a product like Driver Genius or Radar Sync to verify you have the latest drivers and help keep all your drivers up-to-date. If you're comfortable with driver installations, you can individually find and install current drivers.

A some of the most popular driver download sites:

 
   
 
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  FaultWire Staff
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Also see our list of common Fatal Error Solutions.

 
 
 
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  Technical Details  
     
 
  technical details

A kernel-mode driver attempted to access pageable memory at a process IRQL (Interrupt Request Level) that was too high.

After the Stop code will be 4 hex values: {Parameter 1, Parameter 2, Parameter 3, Parameter 4}.

Parameter 1 specifies the memory referenced.

Parameter 2 specifies the IRQL at time of reference.

Parameter 3 is set to 0 for reads, and is set to 1 for writes, and set to 8 for execute.

Parameter 4 specifies the address that referenced memory.

(For software developers: MSDN reference)

 
   
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  Microsoft Corporation (more info...)

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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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