The FIRST course of action when a computer is experiencing overheating issues due to a non-functioning CPU fan is to **replace the CPU fan**. The CPU fan is crucial for cooling the processor, preventing it from overheating. If the fan is not functioning properly, the CPU will not receive adequate cooling, leading to overheating and potentially causing damage to the processor.
By replacing the CPU fan with a functioning one, you ensure that proper cooling is provided to the CPU, helping to prevent overheating issues. This is a more practical and cost-effective solution compared to replacing the entire CPU or applying thermal paste, as the root cause of the overheating problem lies in the malfunctioning fan.
After replacing the CPU fan, it is also important to **clear the dust from the heat sink**. Dust accumulation on the heat sink can hinder heat dissipation, further contributing to overheating problems. Regular maintenance, such as cleaning the heat sink and ensuring proper airflow within the computer case, can help prevent future overheating issues and prolong the life of the CPU.
In summary, the initial step to address overheating problems caused by a non-functioning CPU fan is to replace the fan itself. Subsequently, clearing dust from the heat sink and maintaining proper airflow within the computer case can help prevent overheating and maintain optimal performance.
