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Honor Student
Posts: 2
Member Since: ‎02-21-2014
Message 1 of 4 (365 Views)

New CPU fan - CPU-FAN has failed

[ Edited ]

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: 7,652
Member Since: ‎09-28-2010
Message 2 of 4 (319 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 (286 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: 7,652
Member Since: ‎09-28-2010
Message 4 of 4 (276 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 Pro 64 bit 4th Gen Intel(R) Core(TM) i7-7700HQ + NVIDIA GeForce GTX 1070M 8GB Discrete Graphics (16GB RAM) 512GB m.2 SSD
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 Z97D, I7-4790k, 16GB RAM, WIN7 Pro 64bit, ZOTAC GTX1080 8GB, 500GB HD SSD, Rosewill Blackhawk case and OCZ 750W.
Printer -- HP OfficeJet Pro 8620
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