DRIVER_IRQL_NOT_LESS_OR_EQUAL or Stop 0x000000D1 Error?

The DRIVER_IRQL_NOT_LESS_OR_EQUAL or Stop 0x000000D1 error message indicates that a driver or part of the Windows operating system tried to access pageable memory using the kernel process IRQL that was too high. This error is usually associated to a device driver or software program installed on your computer.

What is DRIVER_IRQL_NOT_LESS_OR_EQUAL?

IRQL stands for Interrupt Request Level. Computers use interrupt requests to handle a variety of hardware operations. Devices such as video cards, sound cards, and keyboards can all send interrupt requests to the processor. For instance, when the sound card needs to run a process, it sends an interrupt request to the processor saying, “Hey, wait a moment, let me do my job!” The processor then interrupts its current process to let the sound card run its job.

The higher the IRQ of a device, the longer it has to wait before its request is processed. For instance, a device with IRQ 1 will get priority over a device with IRQ 14. When two device drivers share the same IRQ, a system crash with a DRIVER_IRQL_NOT_LESS_OR_EQUAL message can occur.

Causes of Stop 0x000000D1

Stop 0x000000D1 error might show at regular intervals, or in connection with some other event. Every so often a Stop error may emerge to be entirely random. If a Stop error identifies a driver, the problem may not be the reported driver, but other hidden errors. In brief, a Stop error can be a indication of some other problems. The real challenge is to discover the origin of the cause.

The error can be caused by many things, such as:

  1. Installing low quality or incompatible drivers or system services
  2. Bad or corrupt hard drives
  3. Damaged RAM memory, motherboards or power supplies
  4. Damaged virtual memory page file
  5. Plugging in or a surprise removal of a USB device.

How To Fix DRIVER_IRQL_NOT_LESS_OR_EQUAL?

Restore Windows to an earlier restore point

If you are not able to boot Windows due to this error, you have to boot Windows in Safe Mode and restore Windows to an earlier restore point before you try any of the other methods mentioned below.

Click the following links for information about how to boot Windows XP or Windows Vista in Safe Mode.

Click the following links for information about how to restore Windows XP or Windows Vista to an earlier restore point.

Install the most recent Windows service packs

You will avoid a lot of Windows errors when you have the most recent Windows Service Packs installed on your computer. Visit http://windowsupdate.microsoft.com for the latest Windows updates.

Download and install the most recent hardware drivers

Did you recently install new hardware or software? If so, this will help out a lot when troubleshooting DRIVER_IRQL_NOT_LESS_OR_EQUAL.

  1. If you recently installed a new driver, remove it. If you recently updated a driver, try to roll it back to an earlier version. If this resolves the Stop 0x000000D1 error, you should contact the manufacturer about a possible update.
  2. If you or a software program recently installed a system service, try to disable or uninstall the service.

Install the most up-to-date drivers for any recently installed hardware device. If you have not installed any new hardware, check if you have the most recent drivers for the following devices:

  • Video card
  • Network card or router
  • Any external or removable disk drive

Damaged memory

If you have installed new or extra memory into your computer, you should remove it to verify that it is not the cause of the Stop 0x000000D1 problem.

If after removing the memory the problem disappears you have either damaged memory or it is incompatible with other currently installed memory.

If you have not installed any new memory in your computer it is also possible that the current memory is damaged. To test your computer memory you can do a web search and find several software programs designed to test your computer’s memory.

Damaged virtual memory page file

If you are still experiencing an DRIVER_IRQL_NOT_LESS_OR_EQUAL or Stop 0x000000D1 error after following above mentioned steps, then there is a possibility that the virtual memory page file is damaged due to improper shut down. To fix this problem follow the below steps to reset your virtual memory page file.

  1. Click “Start”, and right-click on “My Computer” and select “Properties”.
  2. Then click the “Advanced” tab and the “Settings” button under Performance.
  3. Click the “Advanced” tab and click the “Change” button under Virtual Memory.
  4. If you have a custom setting write these numbers down.
  5. Select “No paging file” and then click OK until all windows are closed.
  6. Restart your computer.
  7. Click “Start”, and right-click on “My Computer” and select “Properties”.
  8. In the System Properties window click the “Advanced” tab.
  9. Then click the “Advanced” tab and the “Settings” button under Performance.
  10. Click the “Advanced” tab and click the “Change” button under Virtual Memory.
  11. Click “System managed size” or correct the window to reflect your custom settings and then click OK until all windows are closed.
  12. Restart your computer.


Other Solutions to Windows Errors and Slow PC Performance

The best thing you can do, to stop your computer from getting more error messages or slow down your PC performance, is to repair and clean your Windows Registry.

Tune Your PC recommends to run a Free Registry Scan from the multi-award winning registry repair tool, RegCure. RegCure cleans, repairs and optimizes the Windows Registry in under 2 minutes. And because it is an user-friendly tool, you don’t have to be a PC geek, like us.

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Tags: DRIVER_IRQL_NOT_LESS_OR_EQUAL, Stop 0x000000D1

One Response to “DRIVER_IRQL_NOT_LESS_OR_EQUAL or Stop 0x000000D1 Error?”

  1. admin Says:

    Hello Michele,

    Did you follow all the steps mentioned in the post above?

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