在Windows 7上安装Laravel v4.2时遇到问题

I am facing problems while installing Laravel on windows 7.

I am using Xampp and installed composer, added the path in the system variable. But when I run "composer install", I found this problem...

Composer could not find the config file C:\ProgramData\ComposerSetup\bin To initialize a project, please create a composer.json file as described in the http://getcomposer.org/, "Getting started section"

I don't know what I have to do now. Please help.
Thanks in advance.

Try curl -sS https://getcomposer.org/installer | php or php -r "readfile('https://getcomposer.org/installer');" | php for a clean install.

If nothing works download this.

You can download Putty to run this commands.

(Make sure your XAMPP or whatever program you are using is running!)