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3 Posts

07-22-2015

Ontario

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Lenovo X240 Fan Noise

2015-07-22, 18:51 PM

I've got a Lenovo X240 that has an issue where the CPU fan kicks in when the CPU is hardly under any load at all. Idle CPU temps are around 50 degrees celcius. Are these the kind of temperatures I should expect from an i7 4600u in an X240 chasis?

 

I have Lenovo Turbo Boost disabled but when I turn it on the fan instantly fires up to max and is extremely loud, even with absolutely no load. The laptop isn't very old so I can't imagine internal dust is an issue at this point. I've installed the latest BIOS which didn't correct the issue. Any suggestions?

 

Thanks

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268 Posts

09-04-2012

DE

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Re: Lenovo X240 Fan Noise

2015-07-23, 20:40 PM

Unfortunately, Lenovo made some changes to the fan control with one of the last UEFI updates that included an update for the Embedded Controller that is in charge of the fan. After the update, I noticed that the fan almost never stops spinning (even at 40° C or below!). For that reason, I created a custom fan profile (using TPFanControl).

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3 Posts

07-22-2015

Ontario

3 Signins

27 Page Views

  • Posts: 3
  • Registered: ‎07-22-2015
  • Location: Ontario
  • Views: 27
  • Message 3 of 3

Re: Lenovo X240 Fan Noise

2015-07-24, 13:25 PM
Thanks for the reply, I'll definitely give TPFanControl a try.
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