Hello, I'm a video enthusiast with a problem. When I am rendering video, at some point the computer will shut down and then start making a low-pitched beeping noise. This will persist until I unplug the computer. I have to let it sit for a while before plugging it in, otherwise the beeping will resume when I press the power button. Based on what I've attempted to read so far, I think it is a power-supply related issue, but I'm not sure. I'm not extremely tech-savvy. Any help would be appreciated, though. Thank you.