Localhost not working - WAMP (Win 7)

[cyanide911]

I'm starting to learn PHP, but for some reason WAMP isn't displaying anything when I try to access it.

I have done the following:

 

1. Click the WAMP icon -> Start all services

2.  in wamp/www, I have a hello world file abc.php

3. '127.0.0.1 localhost' in hosts file.

 

 

But when I try to access 127.0.0.1/abc.php in chrome, I get:

This webpage is not available

The webpage at http://127.0.0.1/ might be temporarily down or it may have moved permanently to a new web address.

HTTP Error 404 (): Unknown error.

In firefox: It gives a blank page.

 

 

Can someone guide me through this? I want to start PHP as soon as possible