The encoding data of the word file attached in the first post has been corrupted by actions of viruses. Without going into technical details, it is sifficient to say that data in such files cannot be restored to the original form.
To keep your data and software protected from viruses, take precautionary measures like install a good antivirus software and keep it updated, also install a good network firewall to stay protected from any threats coming through the network.
If you precisely know which files are infecting data and programs on your computer, you can remove them manually and thus clean your computer from viruses yourself; but I dont think you know
. Therefore it would be better to install a good antivirus software like norton or mcafee.