The BIOS in this system is not fully ACPI compliant. Please contact your system vendor or visit
http://www.hardware-update.com for an update BIOS. If you are unable to obtain an update BIOS or the latest BIOS supplied by your vendor is not ACPI compliant, you can turn off ACPI mode during text mode setup. To do this, simply press the F7 key when you are prompted to install storage drivers. The sistem will not notify you that the F7 key was pressed - it will silenty disable ACPI and allow you to continue yuor installation.