I just accidently hit do not save change on a an important document. Please
help!
Sorry, if you didn't save it, there's nothing to recover.
On the slight chance that there might be a temporary file on the disk with some
part of the document in it, use Windows Search (Windows key + F) and search for
some not-too-common word or phrase that appears in the document. But understand
that there may not be anything there.
