[geekhelp4u]

If the fans are out you really need to get them replaced. They are relatively inexpensive - and without adequate ventilation you run the risk of serious damage.

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Heat is the number one destroyer of computer components.
It takes very little time to melt a capacitor, memory chip, or solder spot.
The cpu can become unusable along with the potential of a fire caused by overheating chips.

[rshaffer61]

Heat is the number one destroyer of computer components.
It takes very little time to melt a capacitor, memory chip, or solder spot.
The cpu can become unusable along with the potential of a fire caused by overheating chips.

[happyrock]

from pcstats
http://www.pcstats.c...?articleID=1720

Most Common Problems
26% PSU and power issues
the power supply is the most dangerous of PC components should come as no surprise. After all, its responsibility is to filter the massive wall voltage into the bite-sized 12V, 5V and 3.3V DC allocations that modern PCs need.When a power supply fails, it often sends random jolts through the rest of the system, killing and sometimes burning your valuable computer components. Unfortunately, many power supplies are manufactured by no name companies with little quality control and packaged in cheap 'white box' systems. The result is a steady stream of computers dieing before their time.

23% Bad gear and user negligence

13% Heatsink related

15% Assembly and moving

10% Lightning strike and static

3% Computer cruelty

6% USB related

2% Overclocking

[rshaffer61]

OK That is a close second place then.