Late here, sorry. Deleted files = ones that have gone to trash / recycle bin are deleted permanently after 30 days. Your best option would be to call Microsoft; if something can be done, they can do it. Have all your product numbers and activation codes available, and your computer running.
Not to sound smart, but yet another example of how important it is to have stuff saved in several places, even paper copies.
Best wishes, hope you make it.