sometimes inserted graphics don't show in normal view

[tjl]

When I am working on a PowerPoint presentation and am inserting graphics,
sometimes the graphics don't show in the normal view. They do show in the
other views, but in the normal view, where the work is done, they don't show.

 

[Echo S]

Try changing hardware acceleration. Try the various settings to see which
works.

How to set graphics hardware acceleration back
http://www.pptfaq.com/FAQ00129.htm