I have been trying to overclock the FSB on my Athlon XP 2500+ (barton) on my soyo KT 400 platinum, but every time I move it up at all above 166 when I exit the bios, it just beeps once and never boots up. I am running Corsair Platinum XMS DDR 3200 and would really like to run it at the full 400mhz. I have tried removing the ABR jumper but that wasnt it.