right click on the desktop screen and if the integrated gpu is used, then there will be a graphics properties option for the intel processors and if it is not integrated gpu there will be a "catalyst control center" option or nvidia option.
you can also click on the drop up button on the task bar at lower right corner of the screen.
#you can check the "program and features" in control panel and if dedicated gpu is used, there will be no AMD or Nvidia software installed.