This is a problem with the settings of the application. Start the camera and then access its Settings. Most of the built-in cameras should have a setting related to Flip Vertically. Turn off or uncheck the option, and the camera should return to normal.
I have also checked the support page provided by ASUS for this device, and Windows 10 isn't in the list which means the issue is caused by compatibility between the old version of Windows and the newer one.
Support page: http://support.asus.com/download.aspx?SLanguage=en&m=X52F&os=