I have the same problem. Here are my IRQ
IRQ 0 High precision event timer OK
IRQ 4 Communications Port (COM1) OK
IRQ 8 High precision event timer OK
IRQ 9 Microsoft ACPI-Compliant System OK
IRQ 13 Numeric data processor OK
IRQ 14 Primary IDE Channel OK
IRQ 16 NVIDIA GeForce GTX 260 OK
IRQ 16 Marvell 61xx Marvell RAID Controller OK
IRQ 19 VIA OHCI Compliant IEEE 1394 Host Controller OK
IRQ 20 Standard OpenHCD USB Host Controller OK
IRQ 20 NVIDIA nForce Serial ATA Controller OK
IRQ 21 Microsoft UAA Bus Driver for High Definition Audio OK
IRQ 22 Standard Enhanced PCI to USB Host Controller OK
IRQ 22 NVIDIA nForce Serial ATA Controller OK
IRQ 22 NVIDIA Network Bus Enumerator OK
IRQ 23 NVIDIA nForce Serial ATA Controller OK
I am no computer guy and had to google to find how to look up this, so any help would be appreciated.