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Honor Student
Posts: 2
Member Since: ‎02-21-2014
Message 1 of 4 (303 Views)

New CPU fan - CPU-FAN has failed

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Hello,

 

My new CPU-fan doesn't work, because system reports while starting that "CPU-FAN has failed, system will shut down"

 

 

I'm wondering if there would be BIOS-version that could show hardware monitor, that I could disable cpu-fan warning.

 

mobo Nettle-GL8E, MCP61PM-HM

 

http://support.hp.com/us-en/document/c00906137

 

 

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Dean
Posts: 6,896
Member Since: ‎09-28-2010
Message 2 of 4 (257 Views)

Re: New CPU fan - CPU-FAN has failed

Does the new fan meet the minimum requirements of the old fan? Same pinout and RPM?

Installing a low RPM fan will cause that message. The 3rd wire is the RPM tachometer lead.

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Honor Student
Posts: 2
Member Since: ‎02-21-2014
Message 3 of 4 (224 Views)

Re: New CPU fan - CPU-FAN has failed

Thank you. Yes the new fan has lower rpm fan than old one, its zalmans quite fan.

 

Can I just cut off that 3rd wire?

 

Or is there bios I could disable that fan check?

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Dean
Posts: 6,896
Member Since: ‎09-28-2010
Message 4 of 4 (214 Views)

Re: New CPU fan - CPU-FAN has failed

Quiet fans do not rotate (RPM) fast enough. Been there, and it failed. No, you can not defeat the tachometer pin.

You need to purchase the correct fan, rated for the RPM range.

This system is feedback driven thru Solution and Kudo flags. It's the only means of knowing if you have been served.
Please click Accept as Solution, if your problem is solved. To say THANK YOU, press the "thumbs up symbol" to render a KUDO. You can render both Solution and KUDO..

Loaner: Envy Omen Windows 10 Home 64 4th Gen Intel(R) Core(TM) i7-4720HQ + NVIDIA GeForce GTX 960M 2GB Discrete Graphics (8GB memory) 128GB SSD
Loaner: HP ENVY 8 5002 Tablet
HP Envy 8 5010 Tablet
(2) HP DV7t i7 3160QM 2.3Ghz 8GB
HP m9200t E8400,Win7 Pro, 4GB RAM, ASUS 550Ti 2GB, Rosewill 630W. 1T HD
Custom Asus P8Z87D, I7-4770k, 16GB RAM, WIN7 Pro 64bit, EVGA GTX670 2GB, 500GB HD SSD, Rosewill Blackhawk case and OCZ 750W.
Printer -- HP OfficeJet Pro 8620
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