This is actually something I got to see firsthand after an old computer I had did an auto-shutdown due to an overheated CPU. I thought it was the fan at first, but the fan still works so my next guess was dust causing hot spots in the heat sink. I then noticed some capacitors on the motherboard were bulging, the way I understand it is that a budging capacitor can mean the component is close to failure.
What causes this to occur? Is it just normal wear or does it has to with abnormal voltages?
