IRQ Conflicts Q: How can I change the IRQ of either my video card or network card? They share the same IRQ, which I believe is giving me some problems with my DSL modem. I tried to change it in the device manager, but was told I can't change the resource. A: IRQ is an abbreviation for Interrupt Request Line. Every peripheral needs a way to get the attention of the central processing unit. This is done through IRQ. Peripherals can't share interrupt lines-- it confuses the computer. There is no manual way to change IRQ with a modern PCI card. Normally, you shouldn't have to worry about this. Plug and play should automatically find a free IRQ and install the card correctly. It's possible to have devices that seem to share IRQ, but don't. For example, if an IRQ is reserved for a slot that doesn't usually use an interrupt, such as a video card, the video card will show up as using that IRQ when it is not. Unless Windows tells you there is a conflict, odds are there isn't. If Windows tells you there is a conflict there are some things you can do about it.
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