1. You can slim down the computer first, clean up junk files, memory and other things, and clean up things in virtual memory. If the problem still exists after the above treatment, it is the problem of computer heat dissipation.
2. If the machine is used for a long time, the fan will work harder because there is too much dust, and the exhaust port of the fan is blocked, which is the phenomenon that the fan is loud and running fast.
It is suggested that if it is a notebook, take it to a professional to help you clean it after sale, such as dust and cotton wool on the air outlet and fan. When finished, ask the after-sales staff to add some oil to the fan. They have special lubricating oil. You can solve this problem by yourself next time after you go and see how people clean it up. For the desktop, remove the fan by yourself and clean the dust with a dry brush.