Damaged/corrupted file window 10

I have a problem with one of my files I been using for the last couple of months. I have tried mostly everything and is still coming up with the error message if the file is being damaged or corrupted. The funny thing about this situation is I didn't do anything different. I turn on my computer from sleep mode and saw that it said it needed to restart save all my documents and let it restart. When I tried to open both of my documents I was using one couldn't be open. I tried to recover the documents from third party users. I tried deleting the program and reinstalling it. I even try to do a restore point through my computer. Nothing work and I need something to work. All my other PDF files open and it not the one I need. Please help me.