Get rid of Index.php in CodeIgniter URLs

How do I remove the "index.php" from my URL?

Description

Using CI to build a simple MySQL-Php app, I cannot get rid of the "index.php" tag inside the URL:

localhost/CodeIgniter/index.php/Defult_Controller/index

.htaccess

application/.htaccess and application/cache/.htaccess:

<IfModule mod_rewrite.c>

# !IMPORTANT! Set your RewriteBase here and don't forget trailing and leading
#  slashes.
# If your page resides at
#  http://www.example.com/mypage/test1
# then use
# RewriteBase /mypage/test1/

RewriteEngine On
RewriteBase /CodeIgniter/
RewriteCond %{REQUEST_URI} ^system.*
RewriteCond $1 !^(index\.php|images|js|uploads|css|robots\.txt)
RewriteRule ^(.*)$ /index.php/$1 [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]
</IfModule>

<IfModule !mod_rewrite.c>
# If we don't have mod_rewrite installed, all 404's
# can be sent to index.php, and everything works as normal.
# Submitted by: ElliotHaughin

ErrorDocument 404 /index.php
</IfModule>

apache.conf

LoadModule rewrite_module modules/mod_rewrite.so

application/config/config.php

$config['base_url'] = "http://localhost/CodeIgniter/";
$config['index_page'] = '';

PS: Im using codeIgniter 2.5.1 and xampp 3.2.1