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PC freezes after loading PCI drivers because of IRQ conflict

Core Issue

After loading the Peripheral Component Interconnect (PCI) drivers for the client adapter, the PC freezes up. This is caused by an Interrupt Request (IRQ) conflict.


Uninstall the PCI cards and put the client adapter in first or install the card in a different slot. If the PC freezes/hangs when Windows 98/2000/ME starts and is not able to boot in safe mode, this indicates that Windows is trying to place all PCI devices on the same IRQ.

Note:  Try upgrading the wireless card driver and also PCI controller driver [for desktop computer]. Also remove the files netx500.inf and netx500.pnf &  oemX.inf and oemX.pnf before reinstalling.

For more information, refer to the section on "Drivers - PCI and PCMCIA" in the Cisco Aironet Driver and Firmware Frequently Asked Questions.

Problem Type

Other software issues

Device OS does not recognize client card



WLAN adapters (wireless card) / ACU (Aironet Client Utility)

Version history
Revision #:
1 of 1
Last update:
‎06-22-2009 05:35 PM
Updated by:
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