Hi guys, I just built my first computer and I am having some trouble with it. I bought the Intel i5 - 2400 @3.2Ghz and it's heating up too over 70 degrees Celsius and then shutting down. I have the stock CPU fan as well as 4 case fans on medium AND a door open to the cold night air but it is still heating up. I have no idea what to do so any help would be appreciated.