₦airaland Forum

Looks like your powerpoint document was temporarily crashed and in that moment you lost your pages. I would suggest you Microsoft PowerPoint Software - IT specialists from MS, created it especially for hard cases with presentations, it is more effective than Open&Repair function that built-in in Application.

Powerpoint recovery, follow the below mentioned steps:

1. Click File, then choose Save As.
2. Save the PowerPoint file at a new destination with the same or a new name.

http://microsoft-powerpoint-repair..ru/2013/01/recover-corrupt-ppt-pptx-and-pptm.html
https://powerpoint.recoverytoolbox.com/