laravel 5 /auth/login not found

I've made some change in routes.php and rest configuration is default. routes.php is as follows:

//Route::get('/', 'WelcomeController@index');

Route::get('/', 'HomeController@index');

Route::controllers([
    'auth' => 'Auth\AuthController',
    'password' => 'Auth\PasswordController',
]);

Output of php artisan route:list is

+--------+--------------------------------+-------------------------------------------------------+------+------------------------------------------------------------+------------+
| Domain | Method                         | URI                                                   | Name | Action                                                     | Middleware |
+--------+--------------------------------+-------------------------------------------------------+------+------------------------------------------------------------+------------+
|        | GET|HEAD                       | /                                                     |      | App\Http\Controllers\HomeController@index                  | auth       |
|        | GET|HEAD                       | auth/register/{one?}/{two?}/{three?}/{four?}/{five?}  |      | App\Http\Controllers\Auth\AuthController@getRegister       | guest      |
|        | POST                           | auth/register/{one?}/{two?}/{three?}/{four?}/{five?}  |      | App\Http\Controllers\Auth\AuthController@postRegister      | guest      |
|        | GET|HEAD                       | auth/login/{one?}/{two?}/{three?}/{four?}/{five?}     |      | App\Http\Controllers\Auth\AuthController@getLogin          | guest      |
|        | POST                           | auth/login/{one?}/{two?}/{three?}/{four?}/{five?}     |      | App\Http\Controllers\Auth\AuthController@postLogin         | guest      |
|        | GET|HEAD                       | auth/logout/{one?}/{two?}/{three?}/{four?}/{five?}    |      | App\Http\Controllers\Auth\AuthController@getLogout         |            |
|        | GET|HEAD|POST|PUT|PATCH|DELETE | auth/{_missing}                                       |      | App\Http\Controllers\Auth\AuthController@missingMethod     | guest      |
|        | GET|HEAD                       | password/email/{one?}/{two?}/{three?}/{four?}/{five?} |      | App\Http\Controllers\Auth\PasswordController@getEmail      | guest      |
|        | POST                           | password/email/{one?}/{two?}/{three?}/{four?}/{five?} |      | App\Http\Controllers\Auth\PasswordController@postEmail     | guest      |
|        | GET|HEAD                       | password/reset/{one?}/{two?}/{three?}/{four?}/{five?} |      | App\Http\Controllers\Auth\PasswordController@getReset      | guest      |
|        | POST                           | password/reset/{one?}/{two?}/{three?}/{four?}/{five?} |      | App\Http\Controllers\Auth\PasswordController@postReset     | guest      |
|        | GET|HEAD|POST|PUT|PATCH|DELETE | password/{_missing}                                   |      | App\Http\Controllers\Auth\PasswordController@missingMethod | guest      |
+--------+--------------------------------+-------------------------------------------------------+------+------------------------------------------------------------+------------+

When I access the site via http://laravel/ I get

The requested URL /auth/login was not found on this server.

but if I use http://laravel/index.php/auth/login it works without any error. What is wrong with my routing?

I am using WAMP on windows 7 64-bit.