From: Computerpilot on 01/13/2003
FYI: Windows XP and 2K will not allow you to change an IRQ setting in the BIOS. The ACPI Hal sets the IRQ and cannot be changed unless you change the computer to a Standard PC hal. If you need help doing this, please post back and I would be happy to help you with this. Also, please keep in mind that you will lose advanced power management with this change.
A easier method to changing IRQ addresses is to move PCI devices to other slots. If your sound card is not embedded (motherboard integrated), then you should move the sound card as far as possible to the originating slot. This will force the ACPI Hal to change the IRQ address of the card.
There has been times where I have had to purchase another hardware device to get the XP/2K hal to issue correct IRQ addresses. You may even consider this with your video card.
Good luck. Hardware problems are not fun. I have not worked with your motherboard before and do not want to insult you, but lower end motherboards tend to have these types of hardware conflicts with Windows.