AI Summary

Dust can accumulate inside a laptop’s cramped chassis, gathering around vents, the fan and heat sink and restricting airflow. When cooling is limited, the processor may enter thermal throttling, lowering performance to keep temperatures in check. Cleaning the fan often doesn’t require opening the machine; the guide advises turning the laptop off, unplugging it and applying short bursts of electronics‑safe compressed air through the vents. Lenovo recommends performing this routine maintenance every three to six months, depending on the surrounding environment.

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