Corsair H100 Bios Error (No CPU Fan detected)

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CallumGl

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Sep 15, 2013
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[Specs below]

I built my PC last October/November, and after installing almost every component by the videos from the respective manufacturers, the Bios shows a warning screen (after the Asus logo) saying no CPU fan detected. The temperature of the CPU is usually a stable 28-30 degrees, running at 4.2 Ghz, even when rendering with Vegas Pro 11 or running Skyrim at ultra, so I doubt there's a physical problem with the pump. Anyone have any ideas why the warning screen shows? (I have disabled the warning screen at the moment as it slows startup, but it would still show if it was enabled).

Specs:
Intel i7 3770K @ 4.2 Ghz
Asus PZ877-V
16GB Corsair Vengeance black RAM @ 1600Mhz
120GB OCZ Agility 3 SSD
2TB Seagate Barracuda HDD @7200RPM
500GB Seagate Barracuda HDD @5400RPM
MSI R6970 Lightning 2GB
Novatech Powerstation Black Edition 750W
Corsair H100 Cooling System
Novatech Vortex Case
 
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cars12345

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Sep 5, 2013
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As long as your temperatures are good, you have nothing to worry about. The cooler might be spinning too slow for the motherboard to accept it.

Is the fan connected in the CPU_FAN connection?

In BIOS, go to Advanced Mode, go to Monitor, and turn off CPU Fan Monitoring or turn off Q Control, letting the fans run at 12 volts.
 
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P1nnacle

P1nnacle

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Sep 12, 2013
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Your motherboard has a specific 3 or 4 pin plug for a cpu fan which will sound an error if there is no fan plugged into it. An easy fix is to take one of your case fans and plug it into the port. Or, if your H100i has a 3 pin plug, make sure that it is plugged into the CPU fan port.
 
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oczdude8

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Oct 18, 2009
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if you look here, you need to connect a 3pin fan cable that only has 1 wire to your cpu fan header. this 1 pin cpu fan cable will be giving rpm readouts to your motherboard and avoids the cpu fan error.

http://www.corsair.com/en/blog/installing-the-hydro-series-h100-extreme-performance-cpu-cooler-in-the-obsidian-800d

quote:"The final step is to plug in the power cable for the pump. The power cable for the pump has two connectors, one will plug directly into your PSUs 4-pin peripheral cable, and the other will plug directly into your motherboards CPU 4-pin fan header. The H100 is powered by the 4-pin peripheral cable, while the 3-pin fan header sends pump RPM information to your motherboards BIOS."
 
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CallumGl

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Sep 15, 2013
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Ok, I will try this tomorrow, from what I can see though it is connected correctly :/
If it doesn't work though, I'll just leave it. I left it on for 24 hours and it was an idle max of 45*, and Min of 27*, so it seems quite stable

 
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TheTechGamer

TheTechGamer

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Oct 19, 2013
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Make sure you have the 3 PIN connector from your H100 connected to your CPU_FAN plug on your motherboard, also make sure that the Molex cable from your H100 is connected to an open Molex plug.

You will get the BIOS error if you don't have both connected!

Hope this helps!:)
 
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