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Token Ring
Posts: 407
Registered: ‎02-13-2015
Location: USA
Views: 856
Message 1 of 2

T420S Fan Always Running?

Running Win 10 Pro, all drivers up to date, latest BIOS. The fan runs at 4,000RPM almost all of the time especially at idle. CPU is 35C. Is this normal for this series? I have a T400 and the fan does not run constantly.



Community Moderator
Community Moderator
Posts: 4,137
Registered: ‎07-24-2013
Location: CH
Views: 828
Message 2 of 2

Re: T420S Fan Always Running?

Try installing TPFanControl:




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