When I try to start a site in IIS it says:
the process can\'t access the file because it used by another process
I searched in Goog
It is happening because a different process is using port 80, it may be a chat application on your PC like Skype.
First, change the default web site port which was 80 to some unused port (e.g. 8087). To achieve this right click the application and then click on 'Edit Binding'.
After this port change restart again. Now you can identify which process is blocking the IIS Port 80. To check this use netstat command which displays the details of port along with the process ID.