Images showing as inverted or as back and white stripes

Over the last 2 weeks images have slowly been strugling to show correctly.  They come up as black and white stripes or inverterd or not at all.   The below images show how it can look and how it should look.  When you zoom in they look fine.  We have have always had files with this many images on a page  without issue.  This happens with embedeed and unembeded images.  Any help appreciated.