if you are having irq sharing problems...you got to switch from ACPI to standard pc mode...this will sacrifice some features, such as standby, hibernation, stuff like that, but your pc will probably handle all of your audio hardware MUCH better.
get into the Device Manager (Control Panel-System-Hardware)
click Computer, ACPI-PC, Driver, Update Driver
Display a list of the known drivers for this device
Show all hardware of this device class
be sure to do a little research on standard pc mode, but it should transform your pc into the studio you've always wanted!