I tried the steps offered and it did not work.
Those were diagnostic questions -- which you haven't answered -- not steps intended to make things work. Help us help you: please answer those questions, as well as the following additional diagnostic questions.
- You said that you can successfully save these files to your Downloads folder. Can you open them, edit them, and then save them back in the Downloads folder?
- The Downloads folder is generally located at C:\Users<yourusername>\Downloads. Right-click on any file in your Downloads folder and select Properties. Confirm that the "Location" of the file as shown on the Properties dialog is, in fact, C:\Users<yourusername>\Downloads\filename.xxx (if the Location is different, please provide exactly what is shown as the file's location).
- What happened when you attempted to do a System Restore?
- How old was the Restore Point that you tried to use?