Good Evening, I was wondering if someone could offer me some advice on a strange CPU temperatures. The basic sum up is this, while playing Borderlands on my computer a couple of days ago after replacing the motherboard ( The cpu + heatsink were already installed ) and everything was normal and it just switched off, just turned off and would not turn on for a few mins. I thought ok, something probably over heated or what not! So installed CPUID hardware moniter to watch my temperatures. I idle around 50C on all 4 cores ( Intel Q6700 ) I play borderlands and the first two cores have gone up to 83C before I turned the game off and INSTANTLY dropped in temperature back down to about 50/60, even if I alt tab the temperate starts dropping right away. Yet when I play heroes of Newearth all cores average 60C and go no higher ever. What i find odd the heatsink is stone cold, there is no heat in the case at all. But why is it showing the temperature being so variable and so high without reason... Could it be the heatsink isnt on right or there was something else wrong? Any advice would be most appreciated! Dan PS -I ran heavyload and it pushed my temperature up to the mid 80's in seconds!