Its a memory, CPU or video error - or an installation CD problem. Take out and reseat your memory. If the problem still occurs, run a memory check using memtest from
www.memtest.org
if its not the memory, there is not much you can change with a laptop. Try cleaning the CD or borrowing another copy. If that doesn´t work, You can try using an external USB CD drive to load it. (If the BIOS will not boot from it, you can download XP boot floppies)