Make sure your FSB('CPU External clock'

is set to 100MHz both in BIOS and via jumper on your motherboard(refer to you manual for details - i.e. location and correct setting of the jumper...if there is one).
-------------------------
The opinions expressed above do not represent those of Advanced Micro Devices or any of their affiliates.
<center><font color=red>
MODERATOR</center></font>
AMD Athlon 64 X2 6000+ 89W :: Asus M2N32SLI Deluxe :: 2x1024MB Muskin XP2-6400 DDR2-800 :: BeQuiet! Darkpower Pro 530W :: 2x WD Raptor 74GB/10k rpm, RAID 0 :: ATI Radeon X1950XTX