Please capitalize where necessary: as it is hosted entirely online, the chromebooks are the perfect partner for it.
A: As it is hosted entirely online, the Chromebooks are the perfect partner for it.

Please capitalize where necessary: its name has been connected with famous people like henri iii and henri iv who inaugurated it in 1603.
A: Its name has been connected with famous people like Henri III and Henri IV who inaugurated it in 1603.

Please capitalize where necessary: the fastest and easiest way to open your background file is to double-click it.
A: The fastest and easiest way to open your BACKGROUND file is to double-click it.

Please capitalize where necessary: no authentication is a method that allows you to connect to any of the controllers by sending a string to the controller (13).
A:
No authentication is a method that allows you to connect to any of the controllers by sending a string to the controller (13).