sap portal when navigate screen gets black

Hi experts,

We have a portal 7.40 SP14. When we run the portal in edge or we use AFP standards in IE11, and we click on the option view, history, favorites, help etc or the navigation buttons on the right site of the menu bar, the the the screen will turn black.

In edge also our logo is not displayed in the masthead.

how to avoid/solve this?

thanks in advance.

vo.