1. Clean up and delete system junk files with disk.
2. Start-Run-Enter msconfig and uncheck all unnecessary items in the enabled items (such as msn QQ Thunderbolt Virtual CD-ROM, etc.). ).
3, killing viruses and malware.
4. Check whether the cooling vent is clean.
5. Whether the ambient temperature is too high, you can try to raise the notebook to ensure smooth airflow at the bottom and cooperate with heat dissipation.
6. Consider buying a cooling bracket to help the notebook cool down.
7. Shut down some useless running programs to reduce the burden on the fan.
If the above methods can't be solved, I suggest you back up your data and restore your operating system.