I have been using ms powerpoint during some years

[alishalewis]

I have numerous presentation on my computer. Several days ago I created new project in PowerPoint for my boss. Today two hours ago I've almost finished it. Ten minutes ago I decided to open it for checking, but some slides from presentation disappeared. I tried to download powerpoint fix tools from Internet like Stellar Phoenix, but it didn't get my slides back. What can I do further?

 

[_Pete_]

Surely you must have had the slide content stored somewhere on your computer in the first place to insert them into your presentation. Can you not reinsert that content into a new blank slide and then place that slide into the position the slides have disappeared from?