Blank page when displaying wp-admin/setup-config.php file

Hello,

I’m trying to install WordPress 4.3 on an host whith the following versions : PHP Version 5.5.9-1ubuntu4.9 and Mysql version 5.5.43. So this versions should be good to go.
But I encounter the following problem after uploading the entire contain of the wordpress folder I downloaded on my computer : When I go to the root of my installation, I’m redirected to wp-admin/setup-config.php (this is the right behaviour when nothing was set up) and a blank page display.
I tried to change the following line in the setup-config.php :

/**
 * Disable error reporting
 *
 * Set this to error_reporting( -1 ) for debugging
 */
error_reporting(0);

Changes (set -1 instead 0):
error_reporting(-1);
No error appears !
I contacted my hoster, but no answer for the moment. Could it be that this commes from the server ?
I try with another version of WordPress (4.2). Same issue.

Thanks in advance for your help.

PS : tell me if you need more infos about the server (I have access to the PHPinfo).