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System fan doesn't work

eric5143
By eric5143
in Troubleshooting
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Check your BIOS settings or if you have a software fan controller. It may be preventing it from spinning at low temps.

Skyggeis Specs:

 

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor

CPU Cooler: CRYORIG H5 Ultimate 76.0 CFM CPU Cooler  
Motherboard: MSI Z170A SLI PLUS ATX LGA1151 Motherboard
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-3000
Storage: Samsung 850 EVO 250GB 2.5" Solid State Drive 
Storage: Western Digital Caviar Blue 1TB 3.5" Hard Drive 
Video Card: Zotac GeForce GTX 1070 8GB AMP! Extreme
Case: Phanteks ECLIPSE P400S ATX Mid Tower Case Satin Black
PSU: Corsair RMx 750W 80+ Gold Certified Fully-Modular PSU
WiFi Card: Gigabyte GC-WB867D-I REV 4.2
Case Fan: Aerocool DS 140mm Black 93.4 CFM
Case Fan: Aerocool DS 140mm Black 93.4 CFM
Case Fan: Aerocool DS 140mm Black 93.4 CFM
Other: Coolermaster VGA Holder
Other: Phanteks LED Strip 1M
Other: Phanteks Fan Splitter

Monitor: Dell S2716DG

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10 minutes ago, rphawks said:

Check your BIOS settings or if you have a software fan controller. It may be preventing it from spinning at low temps.

My setting are all fine.I actually solved the problem by plugging the system fan to the cpu slot and cpu cooler to the system fan slot. Maybe my mobo has a lower output for system fan which can't power my fans. Is this OK?

 

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3 minutes ago, eric5143 said:

My setting are all fine.I actually solved the problem by plugging the system fan to the cpu slot and cpu cooler to the system fan slot. Maybe my mobo has a lower output for system fan which can't power my fans. Is this OK?

 

Dunno... Is your PSU enough?

Skyggeis Specs:

 

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor

CPU Cooler: CRYORIG H5 Ultimate 76.0 CFM CPU Cooler  
Motherboard: MSI Z170A SLI PLUS ATX LGA1151 Motherboard
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-3000
Storage: Samsung 850 EVO 250GB 2.5" Solid State Drive 
Storage: Western Digital Caviar Blue 1TB 3.5" Hard Drive 
Video Card: Zotac GeForce GTX 1070 8GB AMP! Extreme
Case: Phanteks ECLIPSE P400S ATX Mid Tower Case Satin Black
PSU: Corsair RMx 750W 80+ Gold Certified Fully-Modular PSU
WiFi Card: Gigabyte GC-WB867D-I REV 4.2
Case Fan: Aerocool DS 140mm Black 93.4 CFM
Case Fan: Aerocool DS 140mm Black 93.4 CFM
Case Fan: Aerocool DS 140mm Black 93.4 CFM
Other: Coolermaster VGA Holder
Other: Phanteks LED Strip 1M
Other: Phanteks Fan Splitter

Monitor: Dell S2716DG

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https://linustechtips.com/topic/718865-system-fan-doesnt-work/#findComment-9156223
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37 minutes ago, eric5143 said:

My setting are all fine.I actually solved the problem by plugging the system fan to the cpu slot and cpu cooler to the system fan slot. Maybe my mobo has a lower output for system fan which can't power my fans. Is this OK?

 

No, that's not a really good idea. The header on your motherboard for your CPU fan will throttle the fan speed based on CPU temps. 

So imagine this scenario
>your CPU heats up
>board pushes more voltage to the fan header marked for CPU fan
>Case fan spins up
>CPU fan stays at same rate
>CPU heats up more
>Board pushes more power to the CPU fan header
>Rinse and repeat until the CPU is so hot it begins to thermal throttle or blue screen

My suggestion would be to check for a fan header directly from your PSU or look for a separate chassis fan header on your motherboard, if they are not all in use.

Please post the motherboard model so we can all have a look.  
 

i7 4930k \ Asus P9X79 LE \ Corsair H100i \ 16 GB DDR3 G.SKILL Ripjaw \ Asus Strix R9 380x 4GB \ Crucial 500 GB Sata III SSD \ Thermaltake TR2 RX 850W \ Corsair Crystal 460 Black \ Razer Naga Molten edition \ Razer Black Widow Ultimate \ Klipsch Promedia 2.1 speakers \ Hyper X Cloud Alpha \ 

 

i5 6600k\ Asus Z170-A \ Corsair H100i v2 \ 16 GB DDR4 G.SKILL Ripjaw \ Asus GTX 1060 6GB 4GB \ SanDisk 480 GB Sata III SSD \ Seasonic G Series550W \ DIYPC Skyline 06 black/green \ Razer Naga Epic \ Razer Black Widow Chroma \ Logitech 2.1 Speakers \ Logitech G430 \ 

 

 

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