My CPU temperature has been a problem for a while now. The cooling system it has is stock that came with the Intel I-7. I reapplied thermal paste about the size of a small pea, after cleaning the old off with 99% alcohol. Then reattached the stock cooling system snapping each of the four corners tight into the motherboard. Nothing changed with that, it still idles at about 55-75 degrees Celsius, and when I start a basic browser game the temps can rise to 98 degrees Celsius, and stops there, then slowly goes back down when I close it. The PC has turned off a few times due to heat because of the cooling fan on the processor turned off. I fixed this problem by unplugging and plugging the fan back in, and it hasn't shut off at least since then.The temperature goes up 40 degrees C or more instantaneously. I don't know what the problem could be, I even bought an extra fan for the case. It will hit 98 C with only 10-12% load. Also the heat sink/fan is spotless, no dust at all.