said 1 year, 2 months ago:
This sounds like a problem caused by one of your plugins.
What you should try doing is going to your website using FTP, go into wp-content and rename your plugins folder to something else. Create a new folder and call it plugins. (this is an easy way to empty your plugins folder without losing all the files.)
You should now be able to login to your WP admin. Do so, and go to your plugin page. You will get a lot of messages saying your plugin was deactivated (this is good).
Finally, go back to your FTP and add your plugins again one by one until you find out which plugin has broken WordPress. I then suggest deleting it, or re-downloading the latest version of it.
I hope that helps!