I have an AMD Athlon 3500+ CPU with infinity motherboard and a 3000 RPM with heatsink cooler.
My problem is that the CPU is overheating and whet it reaches 85C the pc shuts down. I've clean the hole pc including the heatsink and replaced the thermal paste 4 times and the CPU is still overheating. The thermal paste I've used is "Cooler Master". I know that the thermal paste I've used is not that good like Arctic Silver but still the CPU shouldn't reach 85C .
This problem appeared before but after a while it disappeared all by it's self .
What do you think is the problem and please before suggesting that I buy a new cooler or thermal paste consider that the when the CPU is at 85C the heatsink is cool (30C) and the problem might be the thermal sensor on the motherboard?