It sounds like a memory problem to me. How big is the graphic? What format
is the graphic in?
If the graphic is too large (electronic size, not physical size), your
computer won't be able to display it easily. If the graphic is in an
incompatible format, you can have problems, too.
Try opening it in the program that originally created the graphic and saving
either at a different resolution or in a different format.
If that doesn't work, try pasting the figure in using "Paste Special" and
selecting Windows Metafile or Enhanced Metafile. If those don't work, try
the other options under "Paste Special." You may need to play with it a
little to come up with a combination your computer's memory limits can handle.
Make sure you aren't tracking your changes when you re-paste the figure in.
Tracking changes only exacerbates the problem.
I hope this helps.
Fred