are you able to navigate the display at all? If you are able to check the display settings double check that you have the lights set to the highlighted settings. On the attachment.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .