How To Fix DRIVER_IRQL_NOT_LESS_OR_EQUAL Blue Screen Errors (0x000000D1)
|Error Number:||Error 0xD1|
|Error Description:||The DRIVER_IRQL_NOT_LESS_OR_EQUAL bug check has a value of 0x000000D1. This indicates that a kernel-mode driver attempted to access pageable memory at a process IRQL that was too high.|
|Software:||Windows Operating System|
|Applies to:||Windows XP, Vista, 7, 8, and 10|
Symptoms of DRIVER_IRQL_NOT_LESS_OR_EQUAL Blue Screen Errors
- “DRIVER_IRQL_NOT_LESS_OR_EQUAL” appears and crashes the active program window.
- "STOP Error 0xD1: DRIVER_IRQL_NOT_LESS_OR_EQUAL" is displayed.
- A problem has been detected and Windows has been shut down to prevent damage to your computer. The problem seems to be caused by the following file:
- Your PC frequently crashes with Error 0xD1 when running the same program.
- “The DRIVER_IRQL_NOT_LESS_OR_EQUAL bug check has a value of 0x000000D1. This indicates that a kernel-mode driver attempted to access pageable memory at a process IRQL that was too high.” is displayed.
- Windows runs sluggishly and responds slowly to mouse or keyboard input.
- Your computer periodically “freezes” for a few seconds at a time.
In most cases, you will experience DRIVER_IRQL_NOT_LESS_OR_EQUAL blue screen errors after you’ve installed new hardware or software. These DRIVER_IRQL_NOT_LESS_OR_EQUAL blue screens can appear during program installation, while a Microsoft Corporation-related software program (eg. Windows Operating System) is running, while a Windows driver is being loaded, or during Windows startup or shutdown. Keeping track of when and where your STOP error occurs is a critical piece of information in troubleshooting the problem.
Causes of DRIVER_IRQL_NOT_LESS_OR_EQUAL Blue Screen Errors
- Incorrectly configured, old, or corrupted device drivers. (very common)
- Corruption in Windows registry from a recent software change (install or uninstall).
- Virus or malware infection that has corrupted Windows system files or Windows Operating System-related program files.
- Driver conflict after installing new hardware.
- Damaged or removed system files after you’ve installed software or drivers related to Windows Operating System.
- Error 0xD1 blue screen caused by a damaged hard disk.
- DRIVER_IRQL_NOT_LESS_OR_EQUAL STOP error due to memory (RAM) corruption.
DRIVER_IRQL_NOT_LESS_OR_EQUAL blue screen errors can be caused by a variety of hardware, firmware, driver, or software issues.
Blue Screen Errors Knowledgebase
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How To Fix DRIVER_IRQL_NOT_LESS_OR_EQUAL Blue Screen Errors (BugCheck 0xD1)
Below is a list of troubleshooting steps to resolve your DRIVER_IRQL_NOT_LESS_OR_EQUAL problems. These troubleshooting steps get progressively more difficult and time consuming, so we strongly recommend attempting them in ascending order to avoid unnecessary time and effort.
Please Note: Click the [ ] image to expand the troubleshooting instructions for each step below. You can also click the [ ] image to hide the instructions as you proceed through each step.
Manually editing the Windows registry to remove invalid DRIVER_IRQL_NOT_LESS_OR_EQUAL keys is not recommended unless you are PC service professional. Incorrectly editing your registry can stop your PC from functioning and create irreversible damage to your operating system. In fact, one misplaced comma can prevent your PC from booting entirely!
Because of this risk, we highly recommend using a trusted registry cleaner such as (Developed by Microsoft Gold Certified Partner) to scan and repair any Error 0xD1-related registry problems. Using a automates the process of finding invalid registry entries, missing file references (like the one causing your DRIVER_IRQL_NOT_LESS_OR_EQUAL error), and broken links within the registry. A backup is automatically created before each scan, with the ability to undo any changes in a single click, protecting you against the possibility of PC damage. The best part is that can also dramatically improve system speed and performance.
Caution: Unless you an advanced PC user, we DO NOT recommend editing the Windows registry manually. Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows. We do not guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.
To manually repair your Windows registry, first you need to create a backup by exporting a portion of the registry related to DRIVER_IRQL_NOT_LESS_OR_EQUAL (eg. Windows Operating System):
The next steps in manually editing your registry will not be discussed in this article due to the high risk of damaging your system. If you would like to learn more about manual registry editing, please see the links below.
We do not claim any responsibility for the results of the actions taken from the content linked below - complete these tasks at your own risk.
There is a chance that your DRIVER_IRQL_NOT_LESS_OR_EQUAL error could be related to a malware infection on your PC. These malicious intruders can damage, corrupt, or even delete Blue Screen Errors-related files. Furthermore, there's a possibility that the 0xD1 error you are experiencing is related to a component of the malicious program itself.
Tip: If you do not already have a malware protection program installed, we highly recommend using Emsisoft Anti-Malware (). They offer a malware removal guarantee that is not offered by other security software.
Over time, your computer accumulates junk files from normal web surfing and computer use. If this junk isn't occasionally cleaned out, it can cause Windows Operating System to respond slowly or provides an DRIVER_IRQL_NOT_LESS_OR_EQUAL error, possibly due to file conflicts or an overloaded hard drive. Cleaning up these temporary files with Disk Cleanup might not only solve your 0xD1 error, but can also dramatically speed up the performance of your PC.
Tip: Although Disk Cleanup is a wonderful built-in tool, it will not completely clean up all of the temporary files on your computer. Other programs that you frequently use such Microsoft Office, Firefox, Chrome, Live Messenger, and hundreds of other programs are not cleaned up with Disk Cleanup (including some Microsoft Corporation programs).
Because of the shortcomings of the Windows Disk Cleanup (cleanmgr) tool, we highly recommend using a specialized hard drive cleanup / privacy protection software such as (Developed by Microsoft Gold Partner) to clean up your entire computer. Running once per day (using automatic scanning) will ensure that your computer is always clean, running fast, and free of DRIVER_IRQL_NOT_LESS_OR_EQUAL errors related to temporary files.
How to run Disk Cleanup (cleanmgr) (Windows XP, Vista, 7, 8, and 10):
DRIVER_IRQL_NOT_LESS_OR_EQUAL errors can be related to corrupt or outdated device drivers. Drivers can work one day, and suddenly stop working the next day, for a variety of reasons. The good news is that you can often update the device driver to fix the Error 0xD1 problem.
Finding the exact driver for your Error 0xD1-related hardware device can be extremely difficult, even directly on the Microsoft Corporation or related manufacturer's website. Even if you are experienced at finding, downloading, and manually updating drivers, the process can still be very time consuming and extremely irritating. Installing the wrong driver, or simply an incompatible version of the right driver, can make your problems even worse.
DriverDoc updates all of your PC device drivers, not just those associated with your DRIVER_IRQL_NOT_LESS_OR_EQUAL error. DriverDoc's proprietary One-Click Update™ technology not only ensures that you have correct driver versions for your hardware, but it also creates a backup of your current drivers before making any changes. Maintaining a driver backup provides you with the security of knowing that you can rollback any driver to a previous version if necessary. With updated device drivers, you can finally unlock new hardware features and improve the speed and performance of your PC.
Please Note: Your DRIVER_IRQL_NOT_LESS_OR_EQUAL may not be related to hardware driver problems, but it's always a good idea to ensure all of your PC device drivers are up-to-date to maximize PC performance.
Windows System Restore allows you to "go back in time" with your PC to help fix your Error 0xD1 problems. System Restore can return your PC's system files and programs back to a time when everything was working fine. This can potentially help you avoid hours of troubleshooting headaches associated with DRIVER_IRQL_NOT_LESS_OR_EQUAL errors.
Please Note: Using System Restore will not affect your documents, pictures, or other data.
To use System Restore (Windows XP, Vista, 7, 8, and 10):
If your DRIVER_IRQL_NOT_LESS_OR_EQUAL error is related to a specific program, reinstalling Windows Operating System-related software could be the answer.
Instructions for Windows 7 and Windows Vista:
Instructions for Windows XP:
Instructions for Windows 8:
After you have successfully uninstalled your DRIVER_IRQL_NOT_LESS_OR_EQUAL-associated program (eg. Windows Operating System), reinstall the program according to the Microsoft Corporation instructions.
Tip: If you are positive that your 0xD1 error is related to a specific Microsoft Corporation program, uninstalling and reinstalling your DRIVER_IRQL_NOT_LESS_OR_EQUAL-related program will likely be the solution to your problem.
System File Checker is a handy tool included with Windows that allows you scan for and restore corruptions in Windows system files (including those related to DRIVER_IRQL_NOT_LESS_OR_EQUAL).
To run System File Checker (Windows XP, Vista, 7, 8, and 10):
Microsoft is constantly updating and improving Windows system files that could be associated with DRIVER_IRQL_NOT_LESS_OR_EQUAL. Sometimes resolving your Blue Screen Errors problems may be as simple as updating Windows with the latest Service Pack or other patch that Microsoft releases on an ongoing basis.
To check for Windows Updates (Windows XP, Vista, 7, 8, and 10):
While most storage-related, 0xD1 blue screen errors are caused by problems with your hard disk drivers or storage controllers, in some cases these BSODs can be attributed to hard drive corruption.
Over time, your PC can develop errors on the hard disk drive due to repeated, unintended misuse. Improper shut downs, “hard closing” programs, corrupt or incomplete installation of software (eg. Windows Operating System), Microsoft Corporation hardware failure, and power outages can corrupt your file system and stored data. As a result, you may experience blue screen errors associated with DRIVER_IRQL_NOT_LESS_OR_EQUAL.
Microsoft has included a convenient utility called “chkdsk” (“Check Disk”) to scan and repair hard disk corruption. If the previous troubleshooting steps did not resolve your 0xD1 STOP error, running “chkdsk” may uncover and repair the cause of your BSOD.
How to run “chkdsk” (Windows XP, Vista, 7, 8, and 10):
Complete list of “chkdsk” commands (Advanced PC users only):
Sometimes hardware-related DRIVER_IRQL_NOT_LESS_OR_EQUAL blue screen errors can be due to memory (RAM) corruption. If you are experiencing random computer reboots, receiving “beep” codes on startup, or other computer crashes (in addition to 0xD1 BSOD errors), it is likely that your memory could be corrupt. In fact, nearly 10% of application crashes in Windows are due to memory corruption.
If you have just added new memory to the computer, we recommend temporarily removing it to make sure it is not the cause of your DRIVER_IRQL_NOT_LESS_OR_EQUAL error. If this action resolves your BSOD, this will be the source of your problem, and therefore your new memory is either incompatible or bad. If that is the case, you will then need to replace your new memory modules.
If you haven’t added any new memory, the next step is to perform a diagnostic test on your computer’s existing memory. A memory test will scan for hard memory failures and intermittent errors, either of which could be causing your 0xD1 blue screen of death.
Although later versions of Windows include the Windows Memory Diagnostic Tool, I highly recommend using Memtest86 instead. Memtest86 is a BIOS-based memory testing software, unlike other testing programs that must run within Windows. The benefit is that it allows you to test ALL of your memory for DRIVER_IRQL_NOT_LESS_OR_EQUAL errors, while other programs cannot test the section of memory occupied by the software itself, the operating system, and any other running programs.
How to run Memtest86 to scan for memory corruption causing 0xD1 STOP errors:
If all of the above steps were unsuccessful, and Memtest86 finds memory corruption, it highly likely that your DRIVER_IRQL_NOT_LESS_OR_EQUAL blue screen error is due to bad memory. If this is the case, you will need to replace the bad memory to resolve your 0xD1 BSODs.
For additional help, Corsair has a great video tutorial on how to run Memtest86:
Caution: We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve Error 0xD1 problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately () to protect yourself from permanent data loss.
This step is your final option in trying to resolve your DRIVER_IRQL_NOT_LESS_OR_EQUAL issue. Reinstalling Windows will erase everything from your hard drive, allowing you to start again with a fresh system. Furthermore, a clean install of Windows will also quickly clean out any and all "junk" that has accumulated over the normal usage of your computer.
Please Note: If 0xD1 errors still persist after a clean install of Windows, your Blue Screen Errors problem MUST be hardware related. If that is the case, then it is likely you will need to replace the associated hardware causing the 0xD1 error.
Operating System Information
DRIVER_IRQL_NOT_LESS_OR_EQUAL error messages can occur in any of the following Microsoft Windows operating systems:
- Windows 10
- Windows 8
- Windows 7
- Windows Vista
- Windows XP
- Windows ME
- Windows 2000
Are You Still Experiencing Error 0xD1 (DRIVER_IRQL_NOT_LESS_OR_EQUAL) Issues?
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About The Author: Jay Geater is the President and CEO of talonlibre Corporation, a global software company focused on providing innovative utility software. He is a lifelong computer geek and loves everything related to computers, software, and new technology.