Troubleshooting Windows Stop Errors: What they mean (in english)

Windows Stop Errors literally mean that Windows has stopped. These only appear in NT based operating systems such as Windows NT, 2000 and XP. Most of the time the errors are caused by hardware problems. A stop error looks like a Blue Screen with a code below it saying something like “Stop 0x0000000A or IRQL_NOT_LESS_OR_EQUAL” which is the computers way to tell you what is wrong. Here is a list that will tell you what those stop errors mean:

This list here is not a complete list, this only explains the most common ones. If your computer is restarting too quick to see the stop message you can make it not reboot by following the steps in This Article.

Stop 0x0000000A: IRQL_NOT_LESS_OR_EQUAL – This Windows stop error indicates that a kernal mode process or driver tried to access a memory location that it did not have permission to access, or at a IRQL that was too high (a kernal mode process can only access a IRQL that is lower than or equal to its own IRQL.

This stop message usually means that there is incompatable or faulty hardware. In personal experience its usually bad ram.

Stop 0x000000D1: DRIVER_IRQL_NOT_LESS_OR_EQUAL – Note the “Driver” part at the start off the message, this isnt the same as the error message above – This Windows stop error indicates that the computer tried to access memory using a kernal process which had a IRQL that was too high (as kernal processes can only access IRQLs that it is either equal to or IRQLs that less than it). This is usually caused by incorrect or incompatible drivers.

Stop 0x00000024: NTFS_FILE_SYSTEM – This Windows stop error typically indicates that a problem occured with the file NTFS.sys such is the driver that allows the operating system to read and write to NTFS formatted harddrives. This can often be caused by harddrive problems.

Stop 0x000000ED: UNMOUNTABLE_BOOT_VOLUME – This Windows stop error is causes by a Input/Output sub-system tried to use the boot volume but failed. This error can occur during an upgrade to Windows XP Professional on computers that use faster ATA harddrives or have controllers with the wrong cabling.

Stop 0x00000050: PAGE_FAULT_IN_NONPAGED_AREA – This Windows stop error indicates that information that the operating system was looking for was not found in memory (ram). This occurs when the system looks for information in the ram that doesnt exist. This is usually caused by defective RAM (once again, including Ram on your motherboard, L2 cache and video card ram).

Stop 0x0000002E: DATA_BUS_ERROR – This Windows stop error indicates an error in the system memory. It is caused when the system tries to access a memory address that doesnt exist. This usually is caused by defective or failed RAM (including those on your motherboard, Level 2 case or the memory on your video card). This can also indicate harddrive damage caused by viruses or other computer problems.

Stop 0x0000007B: INACCESSIBLE_BOOT_DEVICE – This Windows stop error indicates that Windows XP Professional is unable to access the boot volume or system partition of your harddrive during startup. Installing incorrect drivers for your harddrives or updating the storage adapter hardware usually causes this error. It is also possible that the boot volume or system partition was damaged by a virus infection.

Stop 0x000000EA: THREAD_STUCK_IN_DEVICE_DRIVER – This Windows stop error indicates that there is a problem with a device driver (such as the video card driver) that is causing the system to pause infefinitely. This problem is usually causes when the video card driver is waiting for the video card hardware to become idle but never does. This usually indicates that there is a hardware problem with the video device or the video card driver is faulty.

Stop 0x0000008e: PAGE_FAULT_IN_NON_PAGED_AREA – This is typically caused by faulty RAM or the RAM configuration you are running is incompatible with Windows XP.

Stop 0x00000044: MULTIPLE_IRP_COMPLETE_REQUESTS – This problem is primarily limited to Windows 2000 as is caused by a bad driver called “falstaff.sys”. This can be stopped by updating this driver from the vendor Here.

This list is limited and only explains the more common Windows stop errors. To search for more stop errors and have more detailed repair instructions you can search the Microsoft Website

Bryce Whitty

About the Author

Bryce Whitty
More articles by me...
Bryce is an Australian computer technician and the founder of Technibble. He started his computer repair business when he was 17 years old and is still running it 9 years later. He is an avid traveller and spends at least a month of the year in another country.

Comments (15)

  • Pingback: » Blast from the Past #2 - Technibble - A Resource for Computer Repair Technicians & to get PC tech support help.

  • Weiren says:

    these info are so useful!
    you’ve no idea how these info really saved me lots of time!

  • Antonio Carlos says:

    This info doesn’t help to solve any of the errors, that will be great.

  • ram says:

    i am upgrading win 2003 pn win xp.after copying the files and when driver files is copying then comes blue screen error with this comment….
    irq is less or not equal….0*0000000A(o*00000010,0*00000002,00000000,0*803527be)

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  • ash says:

    i am getting the error
    STOP: 0x 000000ED (0x6434EC00,0xC0000006,0x00000000,0x00000000)

    Please help

  • Ash,
    Questions like this should be asked within the Technibble Forums.


  • hi we have a project about the solution of these error STOP: 0x 000000ED (0×6434EC00,0xC0000006,0×00000000,0×00000000) can you help me thank

  • siva says:

    when booting win xp stop message (blue) occuring like stop:0x0000007b

  • mag61673 says:

    I keep getting blue screens. I was running xp pro and got the “irql not less …” message. I run an amd 9750 quad, which is hot, so I added a liquid cooler, hoping this would solve the issue. It did for a while. Then I got the “drive Irql … ” message, and switched to vista basic (completly upgraded sp2). I still have the blue screen “Driver_IRQL_NOT _LESS_OR_EQUIL”. I am aware that this usualy addresses a kernal trying to acess an area it shouldn’t, with a value that is to high, and that a poorly (digitaly) signed driver is likly the culprit, but how do I solve this issue?

  • lee corless says:

    keeps shutting down and upon reboot it tells me that my too small “documents and settings/temp internet files/ videoplay[1]” to read…… or something to that effect. it always reboots when i watching videos on the net or when i am using editing software. what can i do tostop it?

  • sayied anwer says:

    hi, guys who are facing with blue screen error problem in your systems, i have a suggestion for that, what you people work is just take your system out of your home, offices, which ever, walk in to main road, through it to middle road, it got rectified.

    thank you for reading

  • amy says:

    i got one of these errors- at least once!

    Stop 0×0000000A: IRQL_NOT_LESS_OR_EQUAL
    Stop 0×00000050: PAGE_FAULT_IN_NONPAGED_AREA

    My computer had been in storage- and has gotten very dusty during that time- could this be an error based on the fact that i have not dusted my computer since it has been plugged back in? my system will NOT let me use recovery for some reason. I have virus scanned everything, uninstalled anything that my system says i need to clean out and changed my settings back to proper working order and my system still shuts off!! I do NOT know what is going on!! Could someone help explain how to repair my computer in the EASIEST possible way?
    ~it would be a big help if you did~

  • Chuckry says:

    Stop 0×00000024: NTFS_FILE_SYSTEM – This Windows stop error typically indicates that a problem occured with the file NTFS.sys such is the driver that allows the operating system to read and write to NTFS formatted harddrives. This can often be caused by harddrive problems.

    i got this problem..

    how can i troubleshoot this.. please help me

  • jordan says:

    hii am getting the errorSTOP: 0x 000000Ed how can i fix it