Home Page disappeared

I'm absolutely at a loss as to what has happened but half my homepage won't display. What do I do? Please help.

 

Now the whole homepage has disappeared is there anyone who can help

 

Hello,

Deactivate 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).
It will work, if not then please do let me know your website link.