I am getting a hal.dll corrupt/missing file error. What I am not getting is the chance to do any repairs or to reboot using the CD. The operating system never comes up, it only goes to the error on an empty screen. I have changed the BIOS to allow me to reboot from the CDROM, but it still does not reboot from the disk. I also have not been able to get to DOS to try to work with any of the files that way. I have not done any extreme updates or changes in the last few months. The last major change was to add a 160 hdd over six months ago.