Trying to upgrade the wifes P3 700 PC to allow efficient downloading and some level of multitasking so decided to go with a P4 2.4 GHz w/ 800 FSB as I built this box for my gamer son a few yrs back. Decided to try INTEL mobo (rather than usual ABIT/ASUS choice). BIG Mistake. Put a bunch of working parts on the board but couldn't get new 800 FSB P4 2.4 CPU to even POST. After a day of swapping parts (thinking maybe I shorted something) I started a serious web search for POST issues with INTEL mobos. Best I can tell is some INTEL boards claiming 800 FSB compatability, wont POST with 800 FSB CPU until BIOS is flashed. Of course I cant flash BIOS if system wont POST. Solution noted is try booting with 533 FSB CPU (which I dont have). Any other ideas?