[bocaguy7]

My Dell Dimension 3000 constantly shuts down and when I am able to reboot I have a display mesage stating that I had an event of overheating.
At times it will run for days and other times for minutes. Sometimes it cannot be rebooted for days.
I have checked the capacitors and do not notice that anyare bulging. I cleaned the pwer supply, the chasis fan , the motherboard and the heatsink block.
Does anyone know if it is the power supply, the cpu or the motherboard that creates this problems?
Thank you.

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The issues may be caused by the thermal compound on the bottom of the heatsink drying out, therefore reducing the conductivity of heat from the processor. Thermal Paste is available from any decent shop.

[Neil Jones]

The issues may be caused by the thermal compound on the bottom of the heatsink drying out, therefore reducing the conductivity of heat from the processor. Thermal Paste is available from any decent shop.

[bocaguy7]

Thank you. I will try that next.
Sid