My dad has a Dell PC and I think his Windows XP installation has gone corrupt. It freezes on the blue Windows startup. I dont think it is a hard drive problem, so I was going to reinstall Windows XP. HOwever, I can not afford to loose any of the documents on there as they are VERY important (he is the financial guy for our church). Can i reinstall windows without loosing data? It's been a long time since i have head to deal with a WIndows reinstall.