Disable acpi - this will force the use of conventional IRQs without increasing the number. I would look in bios and also reinstall the os for "standard pc". I have a KR7A non-raid and an audigy oem and it works fine for me with a rad 8500. Unless you have looked around and try to solve your problem first with drivers then I say only dumb people return the cards first thing.
http://www.viahardware.com/faq/kg7kr7/kg7kr7faq.htm
This is better than a forum because it has compiled all the information in to one easy to find spot.

irql_less_or_equal errors are caused by blackice defender on my pc...pls try to update it to prevent further bsods...jes one of the main solutions...

MY WINDOWS XP HOME EDITION IS 100% FLAWLESS CRASHLESS:

AMD Athlon XP 1900+ processor
Thermaltake Volcano 7+ processor fan
768 megabytes DDR PC 2100 184 pin memory: Crucial 512 dimm - Samsung 256 dimm
Western Digital 7200 rpm ata 100 40 gigabyte hard drive
Maxtor Firewire 5400 rpm 80 gigabyte external hard drive
VisionTek GeForce 4 TI4600 graphics processor
Creative Soundblaster Audigy Gamer sound card SB0090X
Plextor Plexwriter 24x10x40 cd recordable drive
Teac 3.5" 1.44 megabyte floppy drive
ASUS A7V266 motherboard
LinkSys 10/100 ethernet lan card pci internal LNE100TX VERSION 4
Toshiba Cable Modem PCX1100
RoadRunner High Speed Internet
Addtronics ATX full tower ET6890A
Antec 350 watt SmartPower ball bearing dual fan power supply
Sony Trinitron 17" crt monitor HMD-A200
Monsoon magnetic planar speakers with subwoofer MM700
PC Concepts Keyboard
Logitech 2X optical mouse
Gravis Elimininator Aftershock gamepad
Hewlett Packard HPDeskjet 960C printer
Microsoft Windows XP Home Edition Full Version ( Full Retail Purchase )

XP is impossible.blue screen stops alot. i have had IRQL_NOT_LESS_OR_EQUAL forever.
and
PAGE_FAULT_IN_NONPAGE_AREA

with alot off different x000000 stop errors
and many times it freezes up everything and gets locked , cpu works then top 100% and then blue screen.

i have send alot of errors reprts to MS and mailed them but get no help anywere!?

anyone here maybe have an idea?

this is the basics
i have EPoX 8KTA3 mainboard (6 pci slots)
windows xp pro OEM (swed language)
geforce 2mx 400
TeKram Ultra 160 scsi
2 cheetah 160 drives
1 Promise IDE ultra133 card
3 cd drives + 1 HP burner
Creative soundbaster live
1024 mb sdram

in bios i have disabled the secondary onboard ide channel cus of the promise ultra 133 card. and disabled extra external usb2
i have tried everyting in bios. it doesnt do any differ really.

help!

Im using a SB Audigy MP3+ with my KR7a-Raid and I havent had a single prob with any of the OS' installed 98SE/2K/XPpro so I guess that theory shot...and I'm not alone, I mean really why would it be incompatable? thats laughable to even presume that

check the event viewer ,and see if all services starts ok.... i had alot of trouble with a service that wouldnt start on xp,whit zone alarm :-?

Since not long after the days of sound blaster 16, Creative sound cards are the best way to fuck your system over. They are Garbage like betamax, winXP, norton antivirus, intel and the red team on soldier of fortune 2. Garbage made out to be the best product BAH! Radio stations used to use AWE32 - snap crackle pop! And just like intel they cost twice as much as superior competitor. Dont get fooled by price!
PRICE <> QUALITY
DONT BELIEVE THE HYPE!