Windows 7 - Apache in XAMPP wont start

Follow the screen shots. By the way I'm using Windows 7 Professional. In other Operating system just try to see its parallelism in terms of navigating the control panel. Just remember for the keywords in the screen shots. Like control panel, firewall, etc.
Here we go:

After doing all this procedure, restart your pc. After you restarted your apache should work well. See my screen shot after I have done the procedure.

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