If you dont hear the fans operating, or feel the warm airflow coming out of the system, i would not trust any software that claims the fans are operational.
Best bet is to open up a ticket with Asus.
Those temperatures are not that high, GPU sounds normal, and the CPU, being a 4000 series haswell, sounds normal too. Tho given the fact that the laptop in question has a solid cooling system (when working proper), i think the cpu temperature oughta be a tad lowe.
In anycase, those are not crashing temperatures for that hardware.