Lap-top enclosure having surface coated with heat-absorbing phase-change material

An electronic apparatus, e.g., a lap top computer, has an enclosure which on its inner surface is coated with a phase-change material, e.g., in micro encapsulated form, preferably mixed with paint which is used to coat the inner surface of the enclosure. The phase change material absorbs heat generated by components in the electronic apparatus and maintains the components in the apparatus at a reasonable temperature.