I have a problem with my Macbook fan. The fan is running normally at 2000 rpm and temperature is 50 degree, but as soon as I open any game, like Football Manager 13 for example, it starts running at 6000+ rpm and the noise is loud. I've ran Apple Hardware Test, but didn't find any problems. I've searched everywhere on the internet for a fix, but didn't find any. It's really annoying, could someone help me please? Thanks in advance.