REFERENCES GONE IN EN LIBRARY

My lines of references disappeared in EN library. I see the numbers of how many references I have and the names of my groups on the left side, but when I click on them, nothing happens and it does not open my lines of descriptions of the articles in the middle portion. What can I do to see my articles again? Thank you.

Can you take a screen shot,  save it and attach it to a reply?  I am not clear on what you are seeing or not seeing.  

They came back somehow. It was as if my library disappeared, then reappeared. Idk why. I ended up shutting my pc down and starting over because I wasn’t able to do anything in EN.