Camarade_Tux, thanks for posting. My motherboard was made in the year 2001. If I could add the value 2001 to DMI BIOS year, this would enable ACPI at booting time and eliminate the message ACPI: no DMI BIOS year, acpi=force is required to enable ACPI. I added the acpi=force in the GRUB configuration file (menu.lst) at the end of the kernel line, but that still doesn't remove the message ACPI: no DMI BIOS year, acpi=force is required to enable ACPI before booting Ubuntu 7.10, and ACPI is still not enabled. Please help me to flash my BIOS or update it, or help me to add the value 2001 to DMI BIOS year, or something. Thanks.