Computer crashes, freezes
Clean out air vents, put filtered material over the inhalation vent, or update BIOS
Overheating can rob your laptop of performance and often cause a host of hiccups, such as system crashes and freezing. Every computer generates lots of heat, but laptops are especially susceptible to overheating due to their small size and lack of ventilation. Excessive dust can clog air vents and deprive your system of cold air to cool off the CPU. You can often solve overheating issues simply by cleaning out these air vents with a cloth or keyboard cleaner.
To prevent further dust buildup, place a piece of filtered cloth, say from a Swiffer, over the inhalation vent. Don't place one over the exhaust vent, as that's where hot air is supposed to flow out of the system quickly. If the cloth doesn't work, you may want to update your system's BIOS, which controls the laptop's hardware. Most manufacturers offer an installation file that updates BIOS files automatically, which often address heat management. Just make sure that your notebook is connected to the power supply when updating the BIOS.