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10-13-2018

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ThinkPad E480 Not Cooling Itself Properly

2018-10-13, 15:05 PM

ThinkPad E480

Model Type: 20KN

BIOS: 1.24V

Windows 10 with latest drivers

 

The problem: The laptop's fan doesn't spin thus the laptop's bottom is very hot.

 

What I need help with: I need a way to disable the fan's shut down feature.

 

Please do not misunderstand, my fan can spin but it will spin briefly when I power on the laptop then when the Windows appears my fan won't spin anymore. I've found a program that can control the fan speed but it's only a partial solution!

 

Any help appreciated.

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2738 Posts

12-22-2008

CA

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Re: ThinkPad E480 Not Cooling Itself Properly

2018-10-14, 13:58 PM

Welcome to the forum.  Modern ThinkPads are designed to run the fan only when temperature levels get high enough to require this cooling. The fan speed also varies as temperature dictates. This is intended to reduce noise as well as wear on the fan.

 

So it's entirely possible that the fan behavior you're seeing is quite normal. It would be helpful if you could post the actual temperatures the E480 is encountering. One free tool to view these is Speccy. Click on the CPU and Storage tabs to get measurements, both when the fan is off and when it comes on.

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Cheers... Dorian Hausman •  English community
X1C6, E470, Y900s, [R.I.P. X1C2, T430s, TPT2, SL500, X61s, T60p, A21p, 770, 760ED... 5160, 5150... S360/30]
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3 Posts

10-13-2018

IL

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Re: ThinkPad E480 Not Cooling Itself Properly

2018-10-20, 13:37 PM
Sorry for replying so late, the CPU temp reaches 54 °C.
And the laptop's bottom is very hot.
Fan won't spin.
Any solution?
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2738 Posts

12-22-2008

CA

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Re: ThinkPad E480 Not Cooling Itself Properly

2018-10-21, 12:35 PM

A temp of 54°C seems reasonable to me, especially if the system is doing some work. This also depends on the CPU and GPU installed in the particular E480 model.

 

That the fan never seems to spin is more troubling, especially when others are complaining about excessive fan noise. This lengthy thread may provide some additional insights and suggestions about this issue. For example near the end a poster points out that the E480 lacks some venting that similar models like the T480 have.

 

Thinkpad E480 heat and fan noise issue.

__________________________________________________
Cheers... Dorian Hausman •  English community
X1C6, E470, Y900s, [R.I.P. X1C2, T430s, TPT2, SL500, X61s, T60p, A21p, 770, 760ED... 5160, 5150... S360/30]
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3 Posts

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IL

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Re: ThinkPad E480 Not Cooling Itself Properly

2018-10-21, 15:27 PM
Everything is on low power, Power Management and Intel driver too.
On the contrary, when I run something heavy that makes the CPU busy only then will the fan start to spin.
So why Lenovo makes the fan dependent on CPU utilization instead of temprature??
Please help! My lap is burning and my sweat is pouring like buckets, IS THERE ANY SOLUTION FOR THIS?
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