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IRQL Not less or equal in Window 10

Getting this Blue screen Error. Please help. Here is some more details.

==================================================
Dump File : 081915-32437-01.dmp
Crash Time : 8/19/2015 10:44:12 AM
Bug Check String : IRQL_NOT_LESS_OR_EQUAL
Bug Check Code : 0x0000000a
Parameter 1 : 00000000`00000002
Parameter 2 : 00000000`00000002
Parameter 3 : 00000000`00000001
Parameter 4 : fffff802`0acadc04
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+14cc20
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+14cc20
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\081915-32437-01.dmp
Processors Count : 2
Major Version : 15
Minor Version : 10240
Dump File Size : 278,384
Dump File Time : 8/19/2015 10:45:28 AM
3 answers Last reply Best Answer
More about irql equal window
  1. Best answer
    The cause can be with a driver conflict where two or more devices wish to share the same IRQ address or number.
    An Irq number is used so each bit of hardware connected to your motherboard can talk to the cpu and the system memory on your motherboard on it`s own private channel as an example.

    When you get two or more devices that request to use the same Irq channel via the software driver.
    You will get errors of Irq not less or equal to. That is why you got the error

    In english it means the cpu could not find, or talk to the device on the selected Irq number or channel set by the software driver for the hardware device in question.

    Or the request times out, because the channel or irq number 7 was dealing with a request from another piece of hardware using the same Irq number. An did not send or receive any data, or had a response from the hardware within a given expected time.

    So what do you do to limit or avoid this conflict ??.
    First of all on new motherboards you free up more Irq`s by disabling hardware devices in the bios of the motherboard.
    Things that are still put on motherboards as interface devices. That you don`t use any more since usb took over.

    Examples of things to turn off in the bios with safety are.
    LPT, printer ports, com ports. Any reference to floppy drives disable them, and the floppy controller found in the bios menus.

    Serial ports of the motherboard.

    And or if you have the option to limit the amount of usb ports enabled if you have more than you need provided by the chip set of the motherboard. Disable a few. For example I can have up to 12 Usb ports on my motherboard, but limit the amount via the bios turning them off so less Irq numbers are used and are freed up as a resource for other hardware devices. avoiding Irq conflicts because there is more of a range of free Irq numbers available to the rest of the system components or hardware devices connected it via other interfaces.


    You do all that. then remove the driver for the hardware in conflict restart the system let windows re detect the hardware and automatically re install it`s driver. or manually install the latest driver for the hardware device.

    To check to see what hardware is in conflict, or shares the same IRQ number you can use device manager and the driver tab for each hardware device, go through the list till you find two or three devices that are trying to use the same IRQ number assignment.

    With luck if you get it right, the error will stop, and no blue screens with windows.

    So the os kernel was looking for a hardware device on an Irq number for the cpu to talk to it like said, or the irq was busy talking to the cpu with another shared bit of hardware using the same Irq designation number. and why the error of

    IRQL_NOT_LESS_OR_EQUAL was generated by ntoskrnl.exe .

    Hope it helps.
  2. Shaun o said:
    The cause can be with a driver conflict where two or more devices wish to share the same IRQ address or number.
    An Irq number is used so each bit of hardware connected to your motherboard can talk to the cpu and the system memory on your motherboard on it`s own private channel as an example.

    When you get two or more devices that request to use the same Irq channel via the software driver.
    You will get errors of Irq not less or equal to. That is why you got the error

    In english it means the cpu could not find, or talk to the device on the selected Irq number or channel set by the software driver for the hardware device in question.

    Or the request times out, because the channel or irq number 7 was dealing with a request from another piece of hardware using the same Irq number. An did not send or receive any data, or had a response from the hardware within a given expected time.

    So what do you do to limit or avoid this conflict ??.
    First of all on new motherboards you free up more Irq`s by disabling hardware devices in the bios of the motherboard.
    Things that are still put on motherboards as interface devices. That you don`t use any more since usb took over.

    Examples of things to turn off in the bios with safety are.
    LPT, printer ports, com ports. Any reference to floppy drives disable them, and the floppy controller found in the bios menus.

    Serial ports of the motherboard.

    And or if you have the option to limit the amount of usb ports enabled if you have more than you need provided by the chip set of the motherboard. Disable a few. For example I can have up to 12 Usb ports on my motherboard, but limit the amount via the bios turning them off so less Irq numbers are used and are freed up as a resource for other hardware devices. avoiding Irq conflicts because there is more of a range of free Irq numbers available to the rest of the system components or hardware devices connected it via other interfaces.


    You do all that. then remove the driver for the hardware in conflict restart the system let windows re detect the hardware and automatically re install it`s driver. or manually install the latest driver for the hardware device.

    To check to see what hardware is in conflict, or shares the same IRQ number you can use device manager and the driver tab for each hardware device, go through the list till you find two or three devices that are trying to use the same IRQ number assignment.

    With luck if you get it right, the error will stop, and no blue screens with windows.

    So the os kernel was looking for a hardware device on an Irq number for the cpu to talk to it like said, or the irq was busy talking to the cpu with another shared bit of hardware using the same Irq designation number. and why the error of

    IRQL_NOT_LESS_OR_EQUAL was generated by ntoskrnl.exe .

    Hope it helps.



    Thanks so much mate !!! Will check it out :)
  3. Shaun o said:
    The cause can be with a driver conflict where two or more devices wish to share the same IRQ address or number.
    An Irq number is used so each bit of hardware connected to your motherboard can talk to the cpu and the system memory on your motherboard on it`s own private channel as an example.

    When you get two or more devices that request to use the same Irq channel via the software driver.
    You will get errors of Irq not less or equal to. That is why you got the error

    In english it means the cpu could not find, or talk to the device on the selected Irq number or channel set by the software driver for the hardware device in question.

    Or the request times out, because the channel or irq number 7 was dealing with a request from another piece of hardware using the same Irq number. An did not send or receive any data, or had a response from the hardware within a given expected time.

    So what do you do to limit or avoid this conflict ??.
    First of all on new motherboards you free up more Irq`s by disabling hardware devices in the bios of the motherboard.
    Things that are still put on motherboards as interface devices. That you don`t use any more since usb took over.

    Examples of things to turn off in the bios with safety are.
    LPT, printer ports, com ports. Any reference to floppy drives disable them, and the floppy controller found in the bios menus.

    Serial ports of the motherboard.

    And or if you have the option to limit the amount of usb ports enabled if you have more than you need provided by the chip set of the motherboard. Disable a few. For example I can have up to 12 Usb ports on my motherboard, but limit the amount via the bios turning them off so less Irq numbers are used and are freed up as a resource for other hardware devices. avoiding Irq conflicts because there is more of a range of free Irq numbers available to the rest of the system components or hardware devices connected it via other interfaces.


    You do all that. then remove the driver for the hardware in conflict restart the system let windows re detect the hardware and automatically re install it`s driver. or manually install the latest driver for the hardware device.

    To check to see what hardware is in conflict, or shares the same IRQ number you can use device manager and the driver tab for each hardware device, go through the list till you find two or three devices that are trying to use the same IRQ number assignment.

    With luck if you get it right, the error will stop, and no blue screens with windows.

    So the os kernel was looking for a hardware device on an Irq number for the cpu to talk to it like said, or the irq was busy talking to the cpu with another shared bit of hardware using the same Irq designation number. and why the error of

    IRQL_NOT_LESS_OR_EQUAL was generated by ntoskrnl.exe .

    Hope it helps.



    Thanks so much for this info! For me it turned out to be that I had too many peripherals plugged into my USB slots. I tried unplugging everything from my machine, and the installation went through just fine.
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