Sorry if I was not very clear before. I did check the fan and the way it's connected. It seems fine and the RPM is measured using Speedfan. If the fan is not connected, it wouldn't detect it would it? And the fan is in automatic mode to increase and decrease its speed. The Cooler's name is Thermaltake A2144 POLO 735 Extreme 3-in-1 Cooler. It is pretty new. I bought it in April and my casing fans are fixed as front and back as "jam" suggested. I didn't have a side panel fan so I removed the side panel to let more airflow. I don't know my room temp but I would assume it is a bit hot. I have another computer as well in the same room which didn't have any of this kind of trouble at all. But I doubt it is prescott and it is a P3 machine.
My system temp is typically around 40-50C and my CPU temp runs random depending on my automatic fan control. If the heat goes up, the fan goes fast to cool it down. Typically it varies from 35-70C. Normally when using the other applications, the CPU temp is somewhere in 50C and when using the game, it restarts. My Bios settings is 80C max and if it goes over, the computer restarts.
Please assist me with any knowledge you have.
FYI: I'm not bragging about anything. Because I am not big on the hardware side in Computing. I am still learning.