Hi Perks. To enable IRQ steering, go to Device Manager, then click on the + alongside "System devices" and select "PCI bus", and then click on "Properties". Select the IRQ Steering tab. The boxes my computer has ticked are: "Use IRQ Steering", "Get IRQ table using ACPI BIOS", "Get IRQ table using MS Specification table" and "Get IRQ table from Real Mode PCIBIOS 2.1 call" If you don't have these options, you may not have all the motherboard drivers installed. For a description of IRQ Steering, have a look at this Microsoft article http: // support.microsoft.com/default.aspx?scid=KB;en-us;182604& (you will have to remove the spaces in the link).
I don't think your motherboard is one of those with the serious usb problems, those are the ones using the VIA VT83C572/VT82C586 PCI to USB Universal Host chipset, click here! . I had one of those, and in the end gave up and bought a new motherboard and processor.