Do you have debug mode enabled? If not, please add define( 'WP_DEBUG', true ); to your wp-config.php file. Then look for error logs and share them with us using pastebin.com.
@binarywc
here is my error log after changing php version.
atal error: Uncaught Error: Call to undefined function mysql_connect() in /home/punkmmur/public_html/wp-includes/wp-db.php:1564 Stack trace: #0 /home/punkmmur/public_html/wp-includes/wp-db.php(592): wpdb->db_connect() #1 /home/punkmmur/public_html/wp-includes/load.php(409): wpdb->__construct(‘punkmmur_calyps…’, ‘7S4T]52!pg’, ‘punkmmur_calyps…’, ‘localhost’) #2 /home/punkmmur/public_html/wp-settings.php(106): require_wp_db() #3 /home/punkmmur/public_html/wp-config.php(93): require_once(‘/home/punkmmur/…’) #4 /home/punkmmur/public_html/wp-load.php(37): require_once(‘/home/punkmmur/…’) #5 /home/punkmmur/public_html/wp-admin/admin.php(31): require_once(‘/home/punkmmur/…’) #6 /home/punkmmur/public_html/wp-admin/index.php(10): require_once(‘/home/punkmmur/…’) #7 {main} thrown in /home/punkmmur/public_html/wp-includes/wp-db.php on line 1564
Please start a new thread explaining your problem with that log and someone will help you. I am not able to help at this time and you will always get the best support by starting your own thread rather than riding on someone else’s thread.
Thanks and good luck.