One vaild reason could be if you do not have a genuine install for Windows when you try to do the update it will not allow it. You would be able to get close to the end but once it begins to validate. In order to fix this you would have to purchase a new install disc or possibly try to revalidate your system with the proper CD key if you have it available.
Sorry I know this isnt what you wanted to hear but I hope it helps.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.