Is your bios set to boot off of the cd first? I imagine that it is but I thought I might as well ask. Do you have any usb or any other devices plugged into the laptop? Even a mouse? If so unplug all of that and see what happens. If none of that helps if you have more then 1 stick of ram in your computer, try taking one out, if the same thing happens then try taking the other. Also since you can get into the bios you may want to see if there is a setting to reset to bios defaults.