CPU lol. Brand new thermal paste. Forgot the name was like silver 5 stuff on newegg and tons of fans on this case. Even though the case flow is crap and I want a new one this still shouldn't overheat lol. I think the cpu cooler is bad or something. It's a asetek liquid cooler Basically clone of corsair H60 or whatever. I've had it for 3 years now. That or my power supply is going bad it's also 3 years old.
Your cooler fluid could need refreshing, Or it's just bad thermal paste, I use arctic silver on both my. Rigs and my i5 which I'm constantly pushing with the stock intel cooler and never get over 65c, Can you tell if the pump is working?
My overclocked i5 2500k would idle on 17c in the winter with the H80 and the Corsair 400D case. 24C idle in summer. Never saw higher than 42C on full load. Loved that thing. Need to build another...