even opening file is a problem?

I made a powerpoint presentation using a lot effects, one moment when I was saving .pptx file, the program hung. After, I opened it and got - The Presentation GorF09.pptx is incomplete. Please reload.

iceng27 days ago

In my time I have lost Many many Engineering project segments, to not making backups often enough.. -.-. . --. -. I feel your pain..

Which will turn from Anger in the past, to rage in the present and must be Redirected into Action for future investment in monthly new thumb drives as I do..

Wait for sales and stock up..

Sounds like the file may have been corrupted by the crash. Your best option would be to restore from a backup (if you have one). You can also try right-clicking on the file and selecting "Restore Previous Versions" (this depends on your version of Windows and whether File History / Shadow copies are enabled).

Alternatively you can try the following: http://www.wikihow.com/Fix-a-Corrupted-PowerPoint-...