This guide shows how to use leftover parts to build a complete portable computer into a compact handled case for testing most PC components. Here is a quote from the guide, "The two biggest problems I had were the video card and the heat sink. I wanted the video card to stay in the mother board so that when the lid closes it just about touches the other side. This meant that nothing could be in its way on the opposite side of the case. This was also the problem with the heat sink on the CPU."