It may seem like a simple task but do not be surprised that a lot of computer users do not know the proper way of avoiding high CPU temperatures. I will go over a few I have reviewed when providing support so that you can see if you are a culprit as well.
There are slips of paper with adhesive backing and it is the most overlooked culprit of an overheating system. The paper is placed on the desktop computer’s front vents which need to let cool air in from the intake fan located behind it. As cool air can not enter efficiently, the computer will gain high interior temperatures as the top vent (while lying horizontally) will be blocked as well by the base of the monitor.
Not every display has an adjustable stand so desktop computers are often placed horizontally and then have the monitor placed on top so that the monitor is at a proper eye level. The problem arises as the computer’s top vents (for the CPU outtake) are often blocked by the base of the monitor. Since the base often has rubber feet, there is some clearance but the user will ofter place books or paperwork being reviewed between the case and the base as well which completely blocks the vent.
To make room on a desk to be productive, the desktop computer will be placed in a tower configuration (vertically) and placed under the desk. This location is where all the dust bunnies love to hide along with loose carpet fibers that are awaiting the computer to be turned on and suck them in. Even if under the desk is emasculate, there is still an issue in cold seasons where portable heaters are used to keep the feet and leg warm and as the air is hot, the computer has no cool air to breathe in.