Locally 404 error while the file exists

[eluser]Redwhirl[/eluser]
Hi,

I have a product.php in the controller where I have this code

<?php
class Product extends Controller{
function index()
{
$this->load->view('product_v');
}
}
?>

and a product_v.php in the views, but when I run product I get a 404 Page not found

I use Wamp locally

Can somebody, tell me what's wrong

Thanks in advance