Need to see if an updated bios exsists for this motherboard. It is a Fujitsu-Seimens OEM that is manufactured by Gigabyte with the motherboard as GA-8ISXT-FS Rev.1.0 The present bios is listed as Bios ver.:8ISXT FSC.F3 or as i865pe-6a79zg00c-00 bios V6.00pc on the post test screen on startup, with a date of 10/16/2003. Looks like it is the same motherboard as a P4 Titan 12ME-8ISXT-0101 Rev.0101

Support Information:
Device Type: BIOS / Motherboard
Manufacturer: fujitsu-seimens
Model: GA-8ISXT-FS
Interface: Other
Operating System: Windows XP Professional
Age of Device: Not specified
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=&qa5=1&qa7=1500&dp=3&qm0=GA-8ISXT-FS&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=fujitsu-seimens+BIOS+%2F+Motherboard+fujitsu-seimens+GA-8ISXT-FS+Windows+XP+Professional+)

I suggest you visit the vendors website: http://www.fujitsu-siemens.co.uk/support/index.html

I doubt you will find oem support from Gigabyte.

Been there with no luck.