To be honest it is not easy to give you proper answer. The temperature is not the same on every notebook model and it depends on usage and power settings.

I don’t know what simple situation is but I presume you don’t switch on your notebook for nothing and I presume you use it for listening music. When you use it on this “simple situation” use eco mode or power saver power pln. Change cooling method option in advanced power options and your notebook will run quiet and with low hardware temperature.

When you want to play games, before you start game use high performance power plan, close all useless applications and be sure notebook’s cooling grills are not blocked. As Paolo already wrote notebook’s cooling system should be enough to cool down notebook’s hardware and allow you to enjoy your games.