Please find out the Windows FAQ docs section below:
As you will find there, Bitnami native installers include a graphical tool to manage services. Once you have completed installed your OrangeHRM stack on your computer, this tool is located in the installation directory and it's named
manager-windows.exe on Windows.
That Manager has a "Welcome" tab, has a link that will open a browser and redirect you to your OrangeHRM installation.