Ok I'm curious what could be wrong. When you try to turn the computer on it acts like its not powering up completely. The lights on the front of the tower come on, but thats it. Nothing at all comes up on the monitor. Not even a prompt screen. It's not the video card because its been taken out and tested in other PC's. I'm thinking it could either be the power supply unit, processor, or motherboard. Anyone else have an opinion about this? I want to get it up and running.