Hi, This PC problem has been around since the computer was purchased two years ago. The computer name is Compaq Presario PC AMD 64 Athlon, the OS being Windows XP Media Center Edition. I've noticed that, whenever a program loads up, taking more than 70% of the CPU (in the task manager), the computer fan spins so quickly that a very loud whirring sound is produced. Not only is this sound annoying to hear, but also I am worried about the long term damages of the computer when the internal server overheats (which is probably why the fan is spinning so loudly). Terminating the application in the task manager is what i do if the fan-spinning doesn't stop on its own, but there are several problems: 1. If that application is System, then I can't terminate it 2. Sometimes an application (e.g. IE) loads for a second and the CPU usage jumps quickly to 100%, before jumping back to 0%. This could damage the CPU 3. If I'm using a certain program, or visiting a site that has flash media, for example, the fan would spin loudly. I'm stuck between stopping what I'm doing or enduring the loud noise before the computer invariably shuts down on itself Is there any way to fix this problem?