Blank screen after importing database to new web hosting

I am planning to change my webhosting to a new server. My website is working fine on my previous hosting.
I exported all the tables from phpmyadmin and imported the database to my database at my new hosting. (the queries executed correctly)
after that i downloaded all the wordpress files from my old hosting and transferred them to my new hosting via File zilla.
Finally i updated the database username and password in wp-config.php
But when i preview my website (without changing name servers) it shows blank white screen.
I cant understand why is it so?
Even i dont changed my domain name or installation directory and there is no extra line at the end of wp-config.php

Any help will be appreciated…