before you make installation of iTop,you should check the requirments.

requirements:

1. Minimum Hardware requirements
2. iTop compatibility list
   check the itop version with Min required → Max supported in php and MySql
3. Configuring your webserver
   • Apache Httpd
     iTop packages contains built-in configuration for Apache Httpd (.htaccess files)
   • Microsoft IIS
     iTop packages contains built-in configuration for Microsoft IIS (web.config files)
     
4. GraphViz (You must download & setup file GraphViz.exe,please make sure it is supported with you PC )
   iTop relies on Graphviz to produce graphical representations of the object’s life-cycle as well as the impact analysis graph.
   On Windows: download Graphviz from the web site and install it.
   if you are not installation GraphViz,you will see the error C:\Program Files\Graphviz\bin\dot.exe

   relate to requirement,please check this https://www.itophub.io/wiki/page?id=latest:install:requirements for detail.

5. clone or download project iTop from Combodo git here:https://github.com/Combodo/iTop
6. after clone project already,you need store it under wamp/www/youritopproject
7. open your project http://localhost/youritopproject/setup/