Not all users have this problem. I suppose it's a minority, or else it would be more known. As have been stated in the foruns I've mentioned in my previous post, there is no easy way to know wich X-Fi + nforce4 combination will give the problems, but it seems to only happen with the first X-Fi released. You are one of the lucky ones that don't have the issue, probably because you have a later version of the X-Fi or your bios is "fixed".
From the Creative forum (reply 143):
"Hi everyone,
First of all I'd like to thank you all again for your feedback, both here on the forum and in direct contact with Customer Support.
A problem was identified on nForce4 based systems where the system ran into difficulties, related to the enumeration of the cards with 2MB (X-Fi XtremeMusic and X-Fi Platinum). This resulted in a variety of symptoms:
- The system may freeze or not boot
- The system may list multiple "Unknown PCI Device" entries and lead to a BSOD
- The system may reboot repeatedly (when "Automatically Restart" is enabled in the Advanced system settings)
Some motherboard manufacturers have already acknowledged this issue and released a BIOS update to resolve it. For systems where a BIOS update is not available we will be providing an alternative resolution in the form of a replacement card with modified firmware. Please contact Customer Support for your region for further details.
Cat"
For me, no bios or drivers has resolved the issue. I've contacted Creative and I'm going to rma the X-Fi. They were quite efficient to deal with my situation. Contacted them in the morning and by lunch time already had my rma number.