Sooner or later in the life of your computer you are going to be plagued with a computer that will not boot. The system can be fine one day and the next time you turn it on you faced with either a blue screen of death, a black screen with just a blinking curser or possibly no response at all. Trying to diagnose and remedy such an event can often be time consuming as you try all the potential fixes before needing to do a full reformat.