I have installed xampp on Windows7(64bit).I want to work with PHP, Apache and MySql. The server Apache and the MySql services are running properly on the Xampp control panel
Its possible that IIS or any other program (like Skype) causes Apache not to start. Although it shows "running" its actually not running.
To solve this, there is an easy trick: Install Apache as an service and restart your computer. This wil work most of the time, since there are a lot of programs that reserve port 80 its hard to find these programs and disable them.