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Most fans are noisy when the computer is switched on to boot up but then quieten down - not mine the noise level does not abate at all and it is annoying.

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Why does the radiator fan run quiet when idling, but sounds like a hurricane when pulling away in low gear, then it quietens down after shifting into second?

Radiator fan is required to move air through Probably both radiatro and air conditioning coil. Fan is responding to an increase in the heat it needs to remove (get rid of) from the cooling and or air conditioning system.

Mar 11, 2015 | 2007 Chevrolet Chevrolet Colorado LT

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Cooling fans are too loud


Sounds like the laptop just needs a right good clean out of dust. Get a can of compressed air and clean the air vents and the fan grill if you have access to it, that should quieten the laptop down. Dust is a common cause of noisy fans.


Jan 02, 2013 | Computers & Internet

1 Answer

I have Acer Veriton 5800 desktop and often the noise get louder and faster and then it quieten down. Do you think it a fan?

Most desktops have fans fitted, especially in the power supply.
The bearings and not that good and become noisy when older. They are replaceable but a replacement power supply is far less effort.
Show the fans a plastic pipe from a vacyym cleaner from time to time, that will make the fans more efficient and reduce the wear and noise.
The hard drive can get noisy also, (if it is I would before it is too late), recommend replacing it.
Hope that helps.

Dec 09, 2010 | Acer Veriton 5800 PC Desktop

1 Answer

Compaq CQ71-140EA; very noisy fan on start up? takes some while to quieten down? Tried dusting with compressed air, no improvement! Any solutions please?

The fan has to be replaced. Make sure it's not the hard drive - are your applications working correctly? To replace the fan, you have to take the laptop apart. I recommend having a shop replace it. It requires disassembly experience to remove and replace.

Nov 12, 2010 | HP Computers & Internet

2 Answers

Today i started up my Asus N50V Laptop up and the fan is running continually now, I rebooted it and still no change. It never has done this before?


It is normal for the fan to kick in to cool the processor, but it sounds to me like the CPU fan and the air vents need a good cleaning.

Noisy fans and them running for a length of time means that its having to be on more to keep the processor cool.
Other causes of the fan being loud and on constantly is gaming and heavy programs. The more the processor has to work the hotter it will get, thus the fan being on all the time.

Have a look at your air vents and the CPU fan for dust. If you see any dust then you will need a can of compressed air to blast through the vents and CPU fan blades free of dust.

Removing the dust from the machine usually quietens them down.


Nov 16, 2009 | ASUS N50Vn Notebook

2 Answers

My fan runs extremely loud on and off

It is set up to run if CPU gets warm/hot. Quiet normal.

If it didn't you would son know. One Cooked CPU with Chips. Expensive tak Away.

Some fans are noisey. You could go to the expense and have a replacement???

Nov 16, 2009 | HP Pavilion dv2915nr Notebook

1 Answer

I have a major tapping noise from a 3lt diesel turbo toyota surf .constant loud tapping ,quietens with oil pick up a little. not a knocking just a tapping

lifters noisy,lots of miles on engine?as oil pressure gets higher and engine warms up(everything expands a little and quietens a little)it gets better,try fresh oil thats thicker for worn engines,and or check tappets(valve adjustment)if its applicable to this engine

Oct 28, 2009 | 1996 Toyota Land Cruiser

2 Answers

The fan on my acer aspire 5535 has started to become very noisy on start up and for about 15 minutes use before it then quietens ~ any thoughts

Soution 1 above is just a link to a bunch of adverts!!

The problem you are having is that the fan has come out of alignment or the bearing is broken. There are two potential solutions, the first is to replace the fan (should only cost around £5 and should be a standard fan or just try to realign it by hand. There is probably less work in just replacing it, trying to fix it could mean disassembly and reassembly of the laptop more than once


Jul 08, 2009 | Acer Aspire 5610-4648 Notebook

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