This may be an issue for certain versions of Word. With the Word document open;

  Word 2002 - Go to Edit/Links in the Word doc. Select all graphics in the list and Break Link button (on the right).

  Word 2007 - Go to File/Info tab. Under 'Related documents' on right side of the screen click 'Edit links to files'.
                        Select all the images and click Break Link.

  Word 2010 - Go to File/Info tab. Under 'Related documents' on right side of the screen click 'Edit links to files'.
                        Select all the images and click Break Link.