htaccess :
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
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>
and is located in directory c:/xampp/htdocs/ci/
and i have removed the index.php from C:\xampp\htdocs\ci\system\application\config\config.php
and mode_rewrite in the C:\xampp\apache\conf\httpd.config is active
thanks for reply