Your computer is the xp system that can't activate the system. My friend's computer is optically equipped for re-installation. What if there's no light? In fact, you can re-install the xp system computer with a disk tool. Let's see the operational steps。How do you re-install your system if your computer doesn't have optical equipment? The simplest approach would be to reload the system with one key, but how to re-install the xp system when