CodeIgniter 3.0 Remote Hosting Issue?

Hello! I had same issues and most of the times is one of the following:

1. Make sure .htaccess is correct like this:

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php/$0 [PT,L]

2. What Php version is running?
3. Is the path to db correct?
4. Are permissions right for the index.php?
5. Do u install in root or other path?
6. Please specify if any clue is found in "application/logs/" or servers logs

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