Hello friends!
I am going to show How to change theme without admin section and using phpmyadmin.
Sometimes wp-admin section not opening due to the themes file. In this case follow my below steps:
1.) First of all login in to cpanel and go to the phpmyadmin.
2.) In the find your wordPress database, in which locate the wp_options table.
3.) In this table (wp_option) go the the page no 2 .
4.) Select the template option in wp_option table, then change the value to twentyeleven. (In which any themes name you will keep it.)
5.) Select the stylesheet option in wp_option table, then change the value to twentyeleven. (In which any themes name you will keep it.)
Thank you and Keep growing!! 🙂