Bios Update Help

Hello all I have an issue that I hope someone will be able to provide some assistance with. I have an intel motherboard model d865GLC. I am attempting to update the bios do to installing a P4 3.4 ghz cpu and the newer bios is needed to run it. I have tried all of the methods provided. I have created a bootable cd and ran the iflash utility but once it gets to the part where the bios should install the pc restarts and boots into windows xp. I have tried the recovery option and I removed the bios jumper and the PC just restarts. I have even tried the in windows update but it restarts the pc and again boots into windows. I do not know what to do anymore and feel like I have hit a brick wall. Any help on this matter would be greatly appreciated.

P.S. I am attempting to update from bios version P07 to P13 and have even tried P25 but no luck......