Heat cooling

: Laptops rely on extremely compact cooling systems involving a fan and heat sink that can fail due to eventual clogging by accumulated airborne dust and debris. Most laptops do not have any sort of removable dust collection filter over the air intake for these cooling systems, resulting in a system that gradually runs hotter and louder as the years pass. Eventually the laptop starts to overheat even at idle load levels. This dust is usually stuck inside where casual cleaning and vacuuming cannot remove it. Instead, a complete disassembly is needed to clean the laptop. Note: The use of canned air can remove a part of the dust inside.

Battery life : Battery life is limited because the capacity drops with time, necessitating an eventual replacement after a few years. A laptop battery in new condition typically stores enough energy to run the laptop for three to five hours, depending on the computer usage, configuration and power management settings. Yet, as it ages the battery's energy storage will progressively dissipate to last only a few minutes. The battery is often easily replaceable, and one may replace it on purpose with a higher capacity model to achieve better battery life.