Hi,
Please try following suggestion:
1) Ask your web hosting provider for the backup and restore for you.
2) Take a backup of your WordPress installation and delete the following files.
wp-content/advanced-cache.php
wp-content/wp-cache-config.php
wp-content/plugins/wp-super-cache
wp-content/cache/wp-cache*
wp-content/cache/supercache
Now take backup of wp-config.php, edit the file and remove the line that says:
define('WP_CACHE', true); //Added by WP-Cache Manager
Again, take a backup of your .htaccess file and remove the lines that looks something like this:
# BEGIN WPSuperCache
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /wordpress/
AddDefaultCharset UTF-8
RewriteCond %{REQUEST_URI} !^.*[^/]$
RewriteCond %{REQUEST_URI} !^.*//.*$
RewriteCond %{REQUEST_METHOD} !=POST
RewriteCond %{QUERY_STRING} !.*=.*
RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress|wp-postpass_).*$
RewriteCond %{HTTP:Accept-Encoding} gzip
RewriteCond %{DOCUMENT_ROOT}/blog/wp-content/cache/supercache/%{HTTP_HOST}/blog/$1/index.html.gz -f
RewriteRule ^(.*) /blog/wp-content/cache/supercache/%{HTTP_HOST}/blog/$1/index.html.gz [L]
RewriteCond %{REQUEST_URI} !^.*[^/]$
RewriteCond %{REQUEST_URI} !^.*//.*$
RewriteCond %{REQUEST_METHOD} !=POST
RewriteCond %{QUERY_STRING} !.*=.*
RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress|wp-postpass_).*$
RewriteCond %{DOCUMENT_ROOT}/blog/wp-content/cache/supercache/%{HTTP_HOST}/blog/$1/index.html -f
RewriteRule ^(.*) /blog/wp-content/cache/supercache/%{HTTP_HOST}/blog/$1/index.html [L]
</IfModule>
# END WPSuperCache
Now, try to browse your website If it makes it worse, restore the full backup.
You should also check the error_log file that your web server creates (ask your web host for the same).
Hope that helps.
Thanks,
