I have an Asus P4PE BP motherboard (533 fsb) with a P4 2.4 ghz processor that works fine. I installed a P4 3.06 ghz processor but the system won't boot. The motherboard reports a cpu test failure (it has a voice POST reporter). I tried entering setup using the 2.4 processor but it won't let me change the cpu speed. The two choices are 2400 mhz and manual. The bios recognized the 2.4 cpu when I first built the system but now doesn't recognize the new cpu. The Asus site says the motherboard supports this processor in all bios versions. I took the processor to a local shop for testing and it's okay. Any help will be appreciated.