Hello, I have had trouble with my PC crashing on and off for two years. It mostly happens when I am gaming. I have tried test replacements for my CPU, GPU and PSU. None of those things fixed the problem. Every time I replace something it will stop crashing for a month or so and then start crashing again. Both sticks of RAM have been tested and had zero errors. The PC is fairly new and I don't know what else to try. I never get blue screens but when it does crash its a total system lock up with a terrible buzzing noise that comes through my headphones and I am forced to manually restart. All my internal temperatures are normal when I am gaming, so I don't think it's an overheating problem. Any thoughts?