When a CPU overheats, it can cause permanent damage to the computer. If you think your CPU is overheating, you should replace your heatsink as soon as possible.
There are a few signs that your CPU is overheating. If your computer is shutting down unexpectedly, or if it is having trouble booting up, these could be signs that the CPU is overheating. You may also notice that the fan is running more loudly than usual, or that the computer is slower than usual.
If you suspect that your CPU is overheating, you should first check the temperature of the CPU with a program like CPU-Z or CoreTemp. If the CPU is indeed overheating, you will need to replace the heatsink.
Heatsinks are available in a variety of sizes and shapes, so you will need to select one that is compatible with your CPU. You will also need to select a heatsink that is rated for the amount of heat your CPU produces.
Once you have selected a compatible heatsink, you will need to install it. This process will vary depending on the type of CPU you have, so be sure to consult your motherboard's manual for instructions.
Once the heatsink is installed, you should see an immediate improvement in the temperature of your CPU. If the overheating problem persists, you may need to replace the thermal paste that is used to transfer heat from the CPU to the heatsink.