The message on the screen calibrating APIC timer ..... .... CPU clock speed is 1395.7390MHz ... host bus clock speed is 0.0000 MHz cpu: 0, clocks: 0, slic: 0 Then nothing. I had to push the reset button at this point. ACPI and APM were disabled from the kernel config. This boot failure messages was obtained from Pentium4 board GB-450(?) from Intel, NVIDIA M64 video. Sound Blaster 128 PCI. Netgear PNIC fast ethernet.... The same kernel was able to boot up the other Pentium 4 board from Gigabyte flawlessly. So, it depends on the motherboard manufacturers. Regards to all. G. Hugh Song - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/