I have been trying to install Xampp on Windows 7 without much success. In total I have downloaded 1.7.3 at least 5 times and I have installed and deleted the software on 9 separate occasions. I have changed the compatibility mode 3 times and on each occasion run the program as the administrator. After the install I have exactly the same problem - Apache will not run? MySql runs fine as does my ftp client.
Here is a link to another forum where I have been asking this very question, you will see a image of the Xampp Control Panel:
Any suggestions are welcome.