My Computer Has Started to Shut Down Randomly. Could it Be the Fan?

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For some reason, my computer randomly shuts down a lot. It’s been happening more and more. It started around the start of summer. It usually would shut down for no reason. Yesterday, it said Over Temperature. This shutting down thing is annoying. When I’m trying to do work, I lose it all and the computer shuts down. I asked my cousin, he said that it could be my fan. I haven’t checked yet, I’m going to ask you first, is it my fan? Or is it another problem? 

Maybe.

The “Over Temperature” is definitely a clue, and the fan is a definite possibility.

But first we should talk about … dust bunnies.

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Why is my computer’s fan coming on?

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My computer fan kicks in for no reason. It never did this before, but it does now. I know that a dirty computer fan could cause overheating, but I checked and blew out the fan with compressed air. Nothing came out. What could be the problem?

The problem is still heat related. The question then becomes: where’s that heat coming from?

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Why Is My Fan Running at High Speed?

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Hi, Leo. I’m using a Compaq 615 laptop with Windows 7. Why is my laptop fan running at high speed? It slows down a bit and then it starts running again at high speed. What can I do to stop it?

Sounds to me like you have a computer that’s running fairly hot.

Most computers have a temperature sensor and a variable-speed fan. As your machine runs, it keeps an eye on how warm it is and decides at what speed to run the fan.

It sounds like your machine is getting hot quickly and tries to cool itself off by running the fan at full speed. That cools it down somewhat so the fan can be slowed down, but then it heats up again and it’s full speed (fan) ahead!

The real question here isn’t why your fan runs so much, but why is your computer getting so hot? There are several reasons why this might be happening.

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