Some mobos have a "Dual BIOS". This is a second duplicate BIOS that the mobo switches to if the primary BIOS becomes corrupt. It's possible your primary BIOS is corrupt and needs to be re-installed, and the mobo is just warning you that it's running off the backup.
Most modern "performance" mobos have this feature since it allows you to tweak and flash your BIOS safely without trashing the mobo (on a single BIOS system if you get a glitch or lose power during a BIOS flash procedure, you've basically trashed the board and have to send it back to the factory).
Read your mobo's manual and see if it features "Dual BIOS" (might be called something else) and how it works.
As for the BSOD on XP install, as OHNNYJ mentioned above, it could be RAM related. Try doing the install with one stick as he recommends.
You should download MEMTEST86 and run it all night (not just 1 pass) and make sure the memory is stable.
That BSOD can also be caused by IRQ issues. Try pulling ALL cards out of the system except the video card, disable the onboard sound, NIC, USB and firewire (if possible) for now, just to get XP installed. You can enable and install them later. Connect only one hard drive and one optical drive to the system for the install.
Another possibility is that you probably need to provide the XP installer with drivers for your mobo's HDD controller. The XP installer does not have generic drivers for modern mobos (particularly mobos with onboard RAID or SATA controllers). You need to have the driver for your HDD controller ready on a FLOPPY (not a CD) during the install process.
Right after booting with the XP CD, a prompt will appear BRIEFLY on the bottom of the screen asking you to press the F6 key if you need to install SCSI or other controller drivers. Press F6 (there will be no immediate response). Once the installer runs another few minutes it will prompt you for a floppy containing your HDD controller driver.
Your mobo may have come with a floppy disk with the mobo drivers on it, or you may need to run a utility on the CD that came with the mobo that will create a floppy for you, or in some cases they make it difficult for you and require that you copy the controller driver files from a folder on the CD onto a floppy yourself (needless to say you need access to a 2nd computer to do this). It's generally only 3 or 4 files.
Keep that floppy handy somewhere you can find it. If you ever need to boot from the XP CD in the future to run the Recovery Console or a Windows XP Repair Install, you should press F6 and supply the controller drivers on the floppy. Sometimes the installer will load the drivers off the existing install, but sometimes not.
Hope this helps...
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