Thread: cannot access admin back end

cannot access admin back end

This problem arose with my having adjusted any settings in any way.
One day things were working fine, next day, I could log onto the site as Admin, but when I click on any of the admin taps at the top of the page such as "Dashboard" or "Comments", I end up with an HTTP 500 error.
It simply won't connect.
So, as it sits, I cannot do any back end work on the site at all, including approving posts, etc.

Any thoughts on how to fix this??