Hi QinesiQ. If your computer BIOS recognises the CD drive and has the CD drive set as the first boot device, then the computer should boot from CD regardless of the condition of the Windows installation. If. on the other hand, the root of the problem is a faulty CD drive then only a new drive will solve that problem. What I have done with a computer with a severely corrupted Windows installation is to fit a new hard drive as master (C), and the old drive as slave (D). This enabled me to install a totally clean Windows XP and still have access to all the saved files on the old drive.