During the installation process, you may get some warnings like Windows asks if you are sure you want to install, and so forth. Just click "Yes" to continue.
In this example we do not install the BitNami because later we want to install WordPress manually only.
XAMPP Control Panel, the display will be open as follows.
In order for PHP scripts and MySQL database can run, then click the Start button on both of them, it will look like the picture below.
Quite easy to install XAMPP on Windows and run localhost to make sure the PHP script can be run and MySQL database is ready for use.
On some computers possible errors caused by conflicting port usage between XAMPP with other applications on your computer, usually port PHP on XAMPP will clash with Skype because together using port 80. The solution is to be changed one port, whether that in Skype or PHP, make sure only one is used to avoid the problem.