Dismantle the CPU fan to clean the dust on the aluminum fan leaf, and then reapply thermal conductive silicon on the surface where the aluminum and the CPU contact, but it is better not to touch the CPU. If there is static electricity, it is easy to break down the internal components of the CPU. It is better to wash your hands. In fact, high temperature is a drawback of the laptop that is difficult to improve. You can buy a device connected to the CPU fan port for air extraction,This problem can be greatly improved,
It's not easy to give an answer to the second-hand price. There is a problem about the depreciation rate. For example, a new computer is 4000, which has been used for more than half a year. If the depreciation rate is 60%, it is 2400. The depreciation rate depends not only on the use time, but also on the current situation of the computer.
