A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Hi,
I understand you see red x in the presentation slides. Let me assist you with the issue.
Does this issue occur with a specific presentation or is it the same with all the files?
What is the format of the pictures inserted?
Let us insert an image of a different format and verify results.
Refer to the following article on graphics are displayed as a red X in a PowerPoint presentation:
http://support.microsoft.com/kb/291874
Note: Above link is applicable for PowerPoint 2013 as well.
You may also refer to the link below which discuses about the similar issue:
I hope this fixes the issue. If not reply and we will be happy to assist you further.
Thank You