Im installing Ubuntu on an old computer that had windows XP on it. It had a corruption in the System 32 file and wouldn't boot up. So I burnt Ubuntu 12.04 LTS to a disc and booted it up. It got as far as Preparing to install Ubuntu, I clicked continue and it's not doing anything. It's not even loading from the disc drive I think.
may I suggest 2 things: (i) did you check the boot sequence in your bios setup (ii)did you try to run a live usb installation to clear up and then install from it
good luck, Emmanuel.