Will, the symptoms of your laptop powering on and shutting off, and having no video etc, do sound like the ones that are usually exhibited by the Nvidia GPU failure. So, first of course, make sure that your laptop has the Nvidia GPU, if so a reflow of the GPU might help. Just remember that a proper reflow is more than just blasting the GPU with hot air. You want to familiarize yourself with the proper procedure and have a couple of old logic boards to practice. It does take practice to get this done. If unsure, you could consider a professional service to do this for you. Hope this helps, good luck.