If you go into the bios change the setting to NO on PnP o.s...... and make sure that you set all PCI devices to a certain IRQ other than auto...... take note of which PCI slots are listed as shared here. Make sure that if you aren't using your com ports, parallel port, usb, or IDE that you disable them so you can add them to the pool used for your PCI cards..... I have the board and have sblive, network card, ati 64 vivo, raid card and I'm not sharing a single IRQ. Hope that helps.