I know little about XP. A friend of mine somehow corrupted the start up string on her home PC. The PC attempts to boot XP, fails and only shows the wallpaper on the screen. Unfortunately she does not have the original XP operating systems disk. The PC, a clone, does not start from the CD. Is there any way I can access the start up string without the operating system booting? Is there any way to change the PC configuration so that it will react to the CD drive first?