white page when testing connection

Hi! I get a white page when testing the connection and I am stuck. Previous topic on this does not help me since I don´t know anything about PDO settings and where to change them.

I have all the settings from configuration.php and I have even imported the DB into the worpress DB in phpmyadmin and changed the settings pointing to the WP DB but nothing but a white page when testing.

Any tip on what setting to change and how…I am not very good att this.

Please help and explain i a way I can understand it easily.

http://ww.wp.xz.cn/extend/plugins/fg-joomla-to-wordpress/