My computer has been running fine till like July 2008. Then problems started arising. My original CPU got damaged (I did it myself :S) and I got a new one, and my CPU temperature rose to 65°C on idle, and my System Temp is at 44°C (Didn't check if it changed). I knew this was a problem since going from mid 30's to mid 60's was wrong. My slowdown is at 65°C, and I can't really do much when my CPU clock is at 1005 MHz. My shutdown is set at 80°C because of my DualCoreCenter program.
I believe that my video card got damaged too, I haven't been able to find a temporary replacement to see if that's a problem as well.
No, 65C (or higher) is not good for those CPUs. I'll try to find the page showing their max safe temp. I would try redoing the Heatsink and thermal paste and checking all fans for dust and possibly trying to increase case airflow.
So unless your temp sensor is wrong (which is certainly possible) you are on the limit of the chip's tolerance. I'd definitely double check all the cooling before overriding the overheat protection. Check that all your fans are clean and working properly.
No, not unless the fan is not spinning or there is no airflow. Assuming it is staying at 1GHz an minimum voltage, it should be producing very little heat. Thus, the only way for it to be getting that hot is if the CPU heat sink is not well connected. If you are sure it is on decently well, then we can assume the temp probe is wrong/misread. The first thing you could try is updating the BIOS. Until the third BIOS iteration on my Gigabyte board, the correct CPU temp would not be read (though in that case it read too low, causing my CPU fan to turn off). That was the only time I had the BIOS read wrong. If the sensor itself is wrong, then there is nothing you can really do but cool it as best as possible and hope it doesn't actually get that hot one day.
Did you use a good thermal compound when you fitted the heatsink on the new CPU? It would be a good place to start as if the cooler is not taking heat from the CPU effectively then you will never get better temperatures.
well, i used the stock thermal grease stuff which came already pasted on my heatsink. That could possibly be the problem, because the temp was constant 60's with the new fan with the thermal stuff already applied and new CPU.