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Whirring noises that get louder


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#1 Professorbed

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Posted 03 April 2012 - 02:18 PM

This may be something that can be easily resolved, Im just not very au fait with computers to be confident ive made a correct judgement!

Ive had my Dell computer nearly 4 years now. For a while now a whirring noise, which i assume is the cooling fan, 'whirs' loudly sometimes, particularly if im listening to live football or more so when im watching live TV. Im assuming its because the machine is having to work harder as i maybe watching TV and listening to football at the same time!

Also often when i listen to the football or listening to songs on iTunes there will be a crackling noise which interrupts the song etc. Not sure what this is.

I have bought a fan at a reasonable price. If it does sound like the fan, is it something that is simple to replace?

Any advice, however simple, would be gratefully received.

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#2 rotor123

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Posted 03 April 2012 - 05:37 PM

The first thing to do is to clean the CPU heatsink. They tend to clog up with dust.
The fan speed is thermal controlled. Thus the hotter the CPU the faster the fan runs.

Also many Dells do not like non Dell fans.

You didn't mention if Desktop or Laptop or Model.
Good Luck
Roger

Fortune Cookie says: Fortune not Found: Abort, Retry, Ignore?

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#3 printerandink

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Posted 04 April 2012 - 10:05 AM

The bearings may be going dead too.

#4 Professorbed

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Posted 08 April 2012 - 10:21 AM

The first thing to do is to clean the CPU heatsink. They tend to clog up with dust.
The fan speed is thermal controlled. Thus the hotter the CPU the faster the fan runs.

Also many Dells do not like non Dell fans.

You didn't mention if Desktop or Laptop or Model.
Good Luck
Roger


Hello Roger
Sorry i havent got back to you sooner, work meant i havent had much time to look at anything recently.

It is a Dell Studio desktop computer.

Is there an idiots guied anywhere you can recommend anywhere that can give a step by step guide to cleaning the CPU heatsink.

Much appreciated
David

#5 rotor123

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Posted 08 April 2012 - 11:26 AM

Hi, It is a dell studio what ?
There are all kinds of Dell Studio including Laptops.

Thanks
Roger

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#6 Professorbed

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Posted 08 April 2012 - 12:26 PM

Hi, It is a dell studio what ?
There are all kinds of Dell Studio including Laptops.

Thanks
Roger


Apologies its a Dell Studio 540 desktop computer

#7 rotor123

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Posted 09 April 2012 - 09:49 AM

HI
This is a link to the entire Dell Service manual for your model.
http://support.dell.com/support/edocs/systems/STD540/en/SM/index.htm

First step is to remove the side cover.
http://support.dell.com/support/edocs/systems/STD540/en/SM/cover_re.htm#wp1188605

The nest step is to determine which of the three fans is the source of the noise.
Power supply fan, Case fan or CPU Heatsink fan (My guess).

Do not start taking things apart. I have indicated the next page for visual reference only.
The thing to avoid doing is removing the heatsink from the motherboard. Don't
http://support.dell.com/support/edocs/systems/STD540/en/SM/fan.htm#wp1184839

Look Under (Through) what Dell calls the "the Processor Fan and Heat Sink Assembly" is it clogged with dust or can you see the fins clearly?

If it is dusty look at these:

This section "Deep-Cleaning the PC" shows a example of using a can of air to blow out the heatsink. Note the dust that has built up under the fan. I also use a small soft brush if the dust isn't coming off. Being careful not to break the fans blades.
http://www.pcworld.com/article/224328/how_to_clean_your_pc_inside_and_out.html

Other thoughts.
Never use a liquid inside the computer
Don't go sticking a vacuum cleaner hose in the computer, it is easy to break things that way.

Let me know how you make out.
Roger

Fortune Cookie says: Fortune not Found: Abort, Retry, Ignore?

Sent from my All-In-One Desktop. Perfect for Internet, Not for heavy usage or gaming however.

How Does a computer get Infected? http://www.bleepingcomputer.com/forums/t/2520/how-did-i-get-infected/
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167 @ June 2015


#8 Professorbed

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Posted 09 April 2012 - 06:34 PM

HI
This is a link to the entire Dell Service manual for your model.
http://support.dell.com/support/edocs/systems/STD540/en/SM/index.htm

First step is to remove the side cover.
http://support.dell.com/support/edocs/systems/STD540/en/SM/cover_re.htm#wp1188605

The nest step is to determine which of the three fans is the source of the noise.
Power supply fan, Case fan or CPU Heatsink fan (My guess).

Do not start taking things apart. I have indicated the next page for visual reference only.
The thing to avoid doing is removing the heatsink from the motherboard. Don't
http://support.dell.com/support/edocs/systems/STD540/en/SM/fan.htm#wp1184839

Look Under (Through) what Dell calls the "the Processor Fan and Heat Sink Assembly" is it clogged with dust or can you see the fins clearly?

If it is dusty look at these:

This section "Deep-Cleaning the PC" shows a example of using a can of air to blow out the heatsink. Note the dust that has built up under the fan. I also use a small soft brush if the dust isn't coming off. Being careful not to break the fans blades.
http://www.pcworld.com/article/224328/how_to_clean_your_pc_inside_and_out.html

Other thoughts.
Never use a liquid inside the computer
Don't go sticking a vacuum cleaner hose in the computer, it is easy to break things that way.

Let me know how you make out.
Roger



Thanks Roger that is extremely helpful. Its 12 30am here now, so will follow the instructions at a more sensible hour.

#9 rotor123

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Posted 10 April 2012 - 09:43 AM

I Agree never do delicate work when tired.

Good Luck
Roger

Fortune Cookie says: Fortune not Found: Abort, Retry, Ignore?

Sent from my All-In-One Desktop. Perfect for Internet, Not for heavy usage or gaming however.

How Does a computer get Infected? http://www.bleepingcomputer.com/forums/t/2520/how-did-i-get-infected/
Forum Rules,    The BC Welcome Guide

167 @ June 2015





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