Short, tested write-ups on the Office failures we see most often. Try the steps yourself first — if the file still will not open, send it over.
PowerPoint Opens and Closes Immediately: Causes and Fixes
You double-click the deck, the splash screen shows for a second, then the window disappears. No error dialog, no “PowerPoint has stopped working”, nothing in the title bar. Sometimes it happens with one file, sometimes with every file you open. The useful question is whether the program is closing itself or dying while it renders this deck. Those look identical and need different fixes. ...