Does your display suddenly go black and your computer shut off? If it does, you may be suffering from what I call the black screen of death. When this happens to most people, they simply restart their computer and move on. When it happens again, they get confused and often think that they have a virus or spyware infection. After scanning, and usually not finding much, the computer goes black again.
Fixing computers requires a fair amount of detective work. It's very helpful to look closely at the computer's behavior, and to identify any patterns that appear to repeating. In this case, the screen usually goes black and the computer powers off. However, sometimes the screen goes black and there is a small flashing cursor in the upper left corner as the computer does not power off. If this is the case, the computer doesn't easily restart and unplugging the power cord or holding down the reset button may be the only way to get it to start again. Another telling bit of information is if the computer is making loud fan noise. Users often complain that their computers are making a lot of noise. The typical 'noise' is that of cooling fans blowing continuously, never cycling down.
These are the signs and symptoms of an overheating computer. Nearly all computers built today have a thermal switch. When the computer reaches a certain high temperature, it shuts itself down to prevent heat damage. Without this switch, the computer could be irreversibly damaged, and at high temperatures, become a fire risk. Computers accumulate a lot of dust and hair around their fans and vents. This is especially the case with computers that are left powered on for extended periods of time and/or are used around pets that shed. As the computers collect dust and hair, their cooling systems need to work harder. So, the fans work harder and stay on longer as they can never reduce the temperature to the point where the fans are instructed slow down or power off. Hence, the increased fan noise.
Dust and hair are not the only causes of overheating. Here is a simple list of other causes:
- Defective cooling fans
- Blocked airways and vents
- Unseated or underpowered heat sinks
- Dust and hair accumulations that physically stop cooling fans
- Laptops sitting on pillows and blanket that block their cooling vents
Please post a comment if this has been helpful to you.
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