I have stock fans from HP with an amd - fx 670k overclocked to 4.2 GHz and a gtx 960 2gb and whenever i play games it sounds like an engine revving or something its so loud. It is very hot in my house but the CPU temps usually sit around 40 degrees C. I tried cleaning it out with pressurized air but that didnt seem to do anything. The fans were never this loud before . Anyone know whats wrong?