A cover assembly for an electronic device including a laptop or like portable computer, wherein the base is formed of an at least partially protective material and corresponds in dimension and configuration to an outer surface configuration of the electronic device. A retainer assembly comprises a plurality of retaining structures disposed within interior portions of the electronic computer and removably connected thereto so as to maintain the cover assembly in an operative position relative thereto. The retaining structures are disposed and dimensioned to facilitate a complete closure of the electronic device, while remaining at least partially, on the interior of the electronic device. An access structure includes at least one opening formed therein in aligned relation with connecting ports of the electronic device so as to facilitate access to the connecting ports through the at least one opening.