I have found that after Creative AWE64 sound card working fine for a while, the card suddenly stops working, and may report the message
"The BIOS of this device is incorrectly reporting the resources for this device. Try getting an updated BIOS from your system manufacturer. Error code (9)."
For some reason the BIOS update for this problem can only be found on the Dell site.
search for "aweflsh.exe" and download the file.
(it says for model ct4520, but it works with the ct4550 and ct4390 as well.)