Image editing on page

Have you tried:

– deactivating all plugins to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s).

– switching to the default theme to rule out any theme-specific problems.

– resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems.

– re-uploading all files & folders – except the wp-content folder and wp-config.php & root .htaccess files – from a fresh download of WordPress. Make sure that you delete the old copies of files & folder before uploading the new ones.

I did deactivate plugins and it made no difference.
Then I received the WordPress update to 3.7 so I updated.
I can now build a new page that lets me edit or delete images on the page with the buttons when I click on the image, I can also add web links to the text on these new pages. However, when I go to edit pages built before the update the images are replaced with a big blank box.