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Thread: IRQL_Not_Less_or_Equal BSOD

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    IRQL_Not_Less_or_Equal BSOD

    Hi,

    I occasionally get a Blue Screen of Death with the following heading:

    IRQL_Not_Less_or_Equal .

    I don't know whether it is just coincidence, but this error seems to occur
    when I am connected to the internet. I use a SpeedTouch 330 USB Broadband
    modem. I have a few IRQ Conflicts: IRQ 20 is shared between my Realtek AC'97
    Audio and my NVIDIA nForce4 ADMA Controller and IRQ 21 shares NVIDIA nForce4
    ADMA Controller and NVIDIA Network Bus Enumerator.

    Could any of these conflicts cause the problems?

    Also, I have read in certain sites that this problem seems to be experienced
    by people using Nvidia Hardware and/or Symantec software. I have an NVIDIA
    PCI/E Graphics card and Symantec Ghost 9.

    Any ideas?

    Thanks
    BadHead
    ---
    OS: Windows XP Professional SP2
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  2. #2
    egg
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    I had the same problem, seemed to have something to do with the usb port on the computer not being able to supply enough power to the modem. I added a PCI usb card and this solved the problem. An external, powered usb hub resolves this issue also. This problem only occurred on my system when trying to access the net.

  3. #3
    HEXUS webmaster Steve's Avatar
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    • Steve's system
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    egg's probably on the money with this one. Those speedtouch modems sap the USB hub of power, and some onboard solutions can't keep up, causing the BSOD.
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    Will work for beer... nichomach's Avatar
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    • nichomach's system
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    Seen the same on Dell Latitude notebooks, and that was down to USB ISDN terminal adapters.

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