Joomla admin blank page

Hello, when I try to access the backend of my joomla website, it shows only a blank page. The website is still working, but not 100%. The carousel news is gone.

I am using joomla 2.5

How can I fix that ?

Enable debugging so error message could be displayed (that could reveal something). Since you don't have backend access you will have to edit configuration.php in joomla root folder manually for ftp client of cpanel file manager.

Change

public $debug = '0';

to

public $debug = '1';

and

public $error_reporting = 'default';

to

public $error_reporting = 'development';

Also if you have some option or if your hosting provider can do virus scan.

Check if this folder exists:

components\com_ag_google_analytics2

If yes, that is not google component it's VIRUS and it's spread largely for joomlas this days.

Ok,
1- public debug was already set to "1"
2- I changed default for development
3- there is no components\com_ag_google_analytics2

4- Still not working. Still a complete blank page when I try to get to my admin (embouledogues.com/administrator

Just to let you know that the site has been hacked around the 20th of december. My hosting company fixed it. But now … seem like they aren't able to do it ...

So do you get some error messages???