Hey,so I have an HP Pavilion dv6 notebook, it's 2 years old. Few days ago, the fan started getting louder and spinning faster while doing absolutely nothing! No programs are open at all. CPU usage is not more than 10%. I also did a system full scan, no viruses were detected. If it helps, the fan started getting louder when I was downloading a movie then has stayed like that for 3 days now. I don't think the issue is dust blocking the fan or the airways. So what can I do ?