PC doesn't detect my CPU Fan?

MagosiYT

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Feb 14, 2016
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Yeah I recently got the Hyper 212 Evo, and its running at 68 degrees celsius when only at 70% load, now I went to speedfan to see how fast the fan was running - And the fan doesn't show up, only the GPU fan does. It also doesn't show in HWIMonitor by CPUID, and Open temp monitor.
My last resort is to re apply the thermal paste as its late and the fan is a ah heck and a half to put in.
Any help appreciated thanks!
 
Solution


speaking of fan location connectors: on the manual page diagram of your motherboard https://www.manualslib.com/manual/485172/Intel-Dq35jo-Desktop-Board-Executive-Series-Motherboard.html?page=12#manual
items :
H - Rear chassis Fan 3pin
L - CPU fan 4 pin
U - Front chassis Fan 3 pin

has I am looking through the manual for your motherboard located at :https://www.manualslib.com/manual/485172/Intel-Dq35jo-Desktop-Board-Executive-Series-Motherboard.html#manual

And I do not see anything jumping at me from the index pages... but found two...
Check your bios. The cpu fan header should be recognized by any software, it's integral to pc operations. Doubtful it has anything to do with paste, more likely the bios is set for silent mode, which normally means the pc is intended for minimal usage, not 70% loads. Also check for any Eco settings that can override bios, usually in either the bios itself, a switch on the motherboard or in Windows Power under Advanced tab.
 
Everything the replies said was right on, but I run an EVO too and I've further lowered temps with a second fan in push pull...Make sure the fans plugged into the CPU fan header and that the BIOS is set right...Also most mobos will tell you on boot when no CPU fan is detected. And that sucker should be spinning hard when under a hot load.But an EVO shouldn't be that hot for sure. Mine peaks at about 60 under OC and load from a maxed-out game or 3DMark. You had to have missed some aspect in hookup. Don't worry about the mount or paste...Unless you used fox (which can take 200 hours to set). If you want to remount just use the pea-method. I do and always get temps like in the product tests.
 


My BIOS is very basic - I have an Intel DQ35JO board.
So the only real Fan Control options i have are-
Automatic Fan Detection
Processor Zone Response
And another one I'm not too sure about - But you get the picture, its very basic settings in my BIOS

Any Ideas what I could do now?
 


CPU Fan 4 pin connector is in the 4 pin header next to the CPU slot, and Fan is correctly connected I am sure.
 


I did the Pea sized method, so I am hoping it is a fault in my BIOS settings :/
 


Since it's christmas soon, I may aswell just get the fan controller.
I don't have front panel bays (sadly) So I am going to get the one in the second link
My question is though, will it work with my PSU (https://www.novatech.co.uk/products/components/powersupplies/451wto650w/nov-psu500.html?gclid=CIiL4qan7dACFRPjGwodxosC6A#utm_source=google&utm_medium=base&utm_campaign=products - The reason it isn't brand name like Corsair etc. is because I just upgraded CPU, Case and Motherboard, so I'm broke at the moment lol,and my next purchase will be the Fan controller and a sound card)
Thanks for linking me to the fan controller btw!
 
Well, make sure you have the requisite power and cable available for the controller you want. But there really should be a way to fix it in BIOS. The likelihood of you getting a BIOS that doesn't allow for fan speed adsjustment is zero, or atleast putting it on auto. But make sure than header is marked CPU header, like the other poster indicated.
 


speaking of fan location connectors: on the manual page diagram of your motherboard https://www.manualslib.com/manual/485172/Intel-Dq35jo-Desktop-Board-Executive-Series-Motherboard.html?page=12#manual
items :
H - Rear chassis Fan 3pin
L - CPU fan 4 pin
U - Front chassis Fan 3 pin

has I am looking through the manual for your motherboard located at :https://www.manualslib.com/manual/485172/Intel-Dq35jo-Desktop-Board-Executive-Series-Motherboard.html#manual

And I do not see anything jumping at me from the index pages... but found two information bits that kind of does answer the questions of how it controls the fans.

under power features and acpi functions I found:
Fan Headers: The function/operation of the fans is as follows:
The fans are on when the computer is in the ACPI S0 state.
The fans are off when the computer is in the ACPI S3, S4, or S5 state.
Each fan header is wired to a tachometer input of the hardware monitoring and
control device.
All fan headers support closed-loop fan control that can adjust the fan speed or
switch the fan on or off as needed.
All fan headers have a +12 V DC connection.
The Desktop Board has a 4-pin processor fan header and two 3-pin chassis fan
headers

then I also found under the BIOS section
Hardware Monitoring and Fan Speed Control: The features of the hardware monitoring and fan speed control include:
Monitoring of power supply voltages to detect levels above and below acceptable
values
Intel Quiet System Technology fan speed control, delivering acoustically-optimized
thermal management
NOTE: Memory must be installed in the Channel A, DIMM 0 socket to enable Intel Quiet System Technology.
Fan speed controllers and sensors integrated into the ICH9DO Thermal sensors in the processor, GMCH, and ICH9DO, plus an onboard remote sensor
NOTE: The minimum thermal reporting threshold for the GMCH is 66 °C. The GMCH thermal sensor will display 66 °C until its temperature rises above this point.Thermally monitored closed-loop fan control, for all onboard fans, that can adjust fan speed or switch the fans off as needed

that last line seems to indicate you can control them from the bios screen. (how I read it but I am French so I could be reading this wrongly)

which would lead me to asking what version of BIOS you have, as on the original link page I posted for the software there were quite a number of BIOS updates maybe it is what you need for it to work ?
here is a quick link the Bios download page I see Last Bios Number as being 1143
https://downloadcenter.intel.com/product/50382/Intel-Desktop-Board-DQ35JO

if all else fails you could , change the fans themselves and get some with faster low revs (ie instead of fan that start at 300 get some that start at 500 so they will get to high rpm faster, or change for a set of fans that have switches on them and set them to a medium or high state of revs.

hope any of this helps your issue
 
Solution