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norman.fusata
1 Copper

Dell Latitude E7450 CPU fan not working

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Hello everyone:

i have a problem with my Latitude E7450 CPU fan, it seems to be working fine, up until one day i spilled some coffee on the keyboard, then i had to disassemble it then i cleaned the keyboard, and have reassembled it.

from that point the CPU fan no longer works when i am using the operating system at all......

i have checked some solution in the internet they suggested to apply the latest BIOS update which i did, but unfortunately the problem persists.

what bothers me the most that the fan works fine when i launch the Dell diagnostics, but it stops working when i load my windows 8.1.

my CPU temperature according to CPUID HWMonitor is : 59° for the package, and 59° for Core 0 and 58° for core 1

i would really appreciate it if someone would guide me to solve this problem.....

thanks in advance

CPU.jpg

 

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U2CAMEB4ME
4 Germanium

Re: Dell Latitude E7450 CPU fan not working

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@norman.fusata 

Yes the fan should turn on when it hits a predefined temperature.

It should spin-up at that temp and then spin down when it goes below that temp.

That is a sign of a normally working fan.

And again your temps are very good, better than most!!!

Regards,

U2


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Dell-Parnoshree C
3 Argentium

Re: Dell Latitude E7450 CPU fan not working

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Hi norman.fusata,

Update the BIOS and Chipset drivers from the given link https://www.dell.com/support/home/us/en/19/product-support/product/latitude-e7450-ultrabook/drivers

If this doesnt help PM us the service tag details we will check the warranty to assist you further.

How to check service tag details https://www.dell.com/support/contents/us/en/04/category/product-support/self-support-knowledgebase/l....

 

 

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U2CAMEB4ME
4 Germanium

Re: Dell Latitude E7450 CPU fan not working

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Welcome to the Dell Community  @norman.fusata 

58° and  59° is pretty good???

What was it before the spill???

Best regards,

U2


Microsoft Registered Refurbisher
Microsoft Registered Partner
Windows Operating System lifecycle fact sheet
Lifecycle begins when released and ends when no longer supported
HP EliteBook 8770w i7-3630QM 32GB
HP ZBook 17 G2 i5-4310M 16GB
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norman.fusata
1 Copper

Re: Dell Latitude E7450 CPU fan not working

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thanks for taking time to replay to my issue:

about installing the latest BIOS update it's already done, but i will give it a try for the CHiPSET drivers.

About the warranty, it's already been voided, since my laptop is used and not new...

best regards

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norman.fusata
1 Copper

Re: Dell Latitude E7450 CPU fan not working

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thanks for your replay:

before the spill it was around 50, 55 the most, it rarely goes beyond that...

do you think that it only starts spinning when it hits a point when its considered Hot for the CPU? it really got me confused.....

thanks again.....

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U2CAMEB4ME
4 Germanium

Re: Dell Latitude E7450 CPU fan not working

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@norman.fusata 

Yes the fan should turn on when it hits a predefined temperature.

It should spin-up at that temp and then spin down when it goes below that temp.

That is a sign of a normally working fan.

And again your temps are very good, better than most!!!

Regards,

U2


Microsoft Registered Refurbisher
Microsoft Registered Partner
Windows Operating System lifecycle fact sheet
Lifecycle begins when released and ends when no longer supported
HP EliteBook 8770w i7-3630QM 32GB
HP ZBook 17 G2 i5-4310M 16GB
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norman.fusata
1 Copper

Re: Dell Latitude E7450 CPU fan not working

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Thanks for the replay:

it really concerns me, because before it was spinning from time to time, now its not spinning for almost 5 days now, but it does when i run Dell diagnostics, maybe because of the cold weather? i am not sure, i will try loading a stressful program for the CPU and see what happens

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norman.fusata
1 Copper

Re: Dell Latitude E7450 CPU fan not working

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thanks again man

following my little brothers suggestions, i installed a game called Mincraft, according to him its very stressful for the CPU, and after installing it and loading it for 2 minutes and Voilà, the fan is super spinning.....

thank you for guiding me to finding the answer.... i really appreciate it.

best regards......

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U2CAMEB4ME
4 Germanium

Re: Dell Latitude E7450 CPU fan not working

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Your very welcome @norman.fusata 

Best regards and post again if you have any further questions.

U2


Microsoft Registered Refurbisher
Microsoft Registered Partner
Windows Operating System lifecycle fact sheet
Lifecycle begins when released and ends when no longer supported
HP EliteBook 8770w i7-3630QM 32GB
HP ZBook 17 G2 i5-4310M 16GB
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