:: whatis wordpress WordPress is an open source CMS, often used as a blog publishing application powered by PHP and MySQL. It has many features including a plugin architecture and a templating system. -[ http://en.wikipedia.org/wiki/Wordpress ]- :: reset themes wordpress to default # with cli [ linux: ~ ]$ mysql -u user -p mysql> use dbwordpress; mysql> UPDATE wp_options SET option_value = 'default' WHERE option_name = 'template'; mysql> UPDATE wp_options SET option_value = 'default' WHERE option_name = 'stylesheet'; # share hosting / cpanel / phpmyadmin 0. login on cpanel / phpmyadmin 1. select db for wordpress 2. select SQL tabs and run this command: UPDATE wp_options SET option_value = 'default' WHERE option_name = 'template'; UPDATE wp_options SET option_value = 'default' WHERE option_name = 'stylesheet'; 3. click GO 4. open your site, if you still get blank screen, you can login on admin page ...