What causes devices to overheat?
Main cause of your desktop or laptop to overheat is lack of cooling. This is commonly caused by some type of blockage.
For instance, dust or debris can accumulate inside your computer or laptop’s ports or vents, which can cause them to clog or block the airways required for proper cooling. Blankets, clothes, comforters, and other types of fabrics can also block airflow and/or over-insulate a computer’s internal components.
Either way, not paying attention to your machine’s maintenance can result in hardware components overheating and malfunctioning.
For this Apple iMac, accumulated dust and debris caused both its cooling fans to work inefficiently, ultimately causing the hard drive to overheat and burn out.