I just reformatted a hardrive for one of my students. I also installed a new sound card and had the pc working beautifly. Now the system will not send a image to the monitor, nor will the mouse, or keyboard work. It looks as if there is eiher an electrical problem or the motherboard is going. I checked all cables, they are fine. I am totally lost on this one. Maybe the answer is looking me straight in the face!! Please help. You can post or e-mail me. Thanks a bunch 🙂