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  #1  
Old 23-04-2018, 03:03 PM
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wedgetail wedgetail is offline
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PC case fan gone mad

The PC case fan has decided to sound like a helicopter. Until yesterday the noise was barely noticeable, but now it starts up at full volume and stays there as long as the machine in turned on.

I have checked everything I can think of

1. No obstructions or dust.
2. BIOS settings all OK
3. All cables seated correctly

Any advice gratefully received.
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Old 23-04-2018, 03:07 PM
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Get a new one. Bearings have probably gone.

Depending on what fan it is they're generally very easy to get your hands on.
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Old 23-04-2018, 03:09 PM
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Quote:
Originally Posted by wedgetail View Post
The PC case fan has decided to sound like a helicopter. Until yesterday the noise was barely noticeable, but now it starts up at full volume and stays there as long as the machine in turned on.

I have checked everything I can think of

1. No obstructions or dust.
2. BIOS settings all OK
3. All cables seated correctly

Any advice gratefully received.
Bearing gone if there's nothing physically touching the fan blades. Change it they are really cheap.
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Old 23-04-2018, 03:41 PM
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wedgetail wedgetail is offline
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2 weeks old fan.
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  #5  
Old 23-04-2018, 03:43 PM
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wedgetail wedgetail is offline
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I think I have a duff mobo, not telling the fan to slow down, this will not be cheap.
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Old 23-04-2018, 05:41 PM
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Quote:
Originally Posted by wedgetail View Post
2 weeks old fan.
You mean your previous case fan had been fine and then started getting noisy and now a new 2 week old fan you put in to replace it is also making lots of noise?

Most modern motherboards will have fan control settings with normally at least 3 profiles in the bios - ie quiet (slow rpm/low noise/int temp gets hotter) upto power user (fast rpm/more noise/int temps are cooler)

Check you settings in the bios to see what rpm you have for your chassis fan and what profile you are using and adjust if need be, if you cant find it or you don't see it then this application can show you your rpm and temps within the OS showing all fans including your chassis fan

To view the link you have to Register or Login

For reference my chassis fan sits around 800rpm under normal conditions to around 1200rpm under heavy load.
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Old 23-04-2018, 05:52 PM
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Heat sync paste drying out will cause this - is the fan on permanently?
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Old 23-04-2018, 05:58 PM
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Originally Posted by Langers View Post
Heat sync paste drying out will cause this - is the fan on permanently?
I believe the OP is referring to his case/chassis fan as opposed to CPU/GPU fan in regard to old thermal paste.

But yes would also be good to see his temps/rpm on his CPU as well. as could be kicking up all the fans rpm if CPU was overheating.
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