I notice that quite a lot of Office users experience difficulties because the applications have different ways of carrying out saves, and not many are of the straightforward industry standard type. I recently lost a whole sequence of Word autosaves because of a system brown-out, probably while an autosave was in progress. The inexpensive software I neglected to use on that occasion was Aladdin Systems' "FLASHBACK". It has previously saved me a lot of work and never given any trouble; I can wholeheartedly recommend it - try www.aladdinsys.com.