Jump to content
Search In
  • More options...
Find results that contain...
Find results in...
saminam

Really need help with My CPU fan not being seen by mobo

Recommended Posts

Posted · Original PosterOP

Basically i went out and got a new cpu fan, The noctua NH-D15. Everything seems to have went well so far. i can control the fans etc but everytime i boot up i get an error message basically saying "cpu fan not detected please check". I then enter BIOS and see that the cpu fan is not there. No RPM or anything at all. But if i change the fan setting to any of the 3 (DC,AUTO or PWM) it changes the fan speed and im basically at a loss. I already tried making sure the connection for the fans was in correctly and it seems it is. I am using both fans and the splitter cable. Could really use some help.

Link to post
Share on other sites

prolly put it on the wrong pwm plug, u need to set it to cpu pwm not cpu opt

 

r u sure its in cpu fan pwm on the mobo?

 

if that doesnt solve it just set in monitor mode, ignore cpu fan, it will remove the error


(◑‿◐)

Link to post
Share on other sites
Posted · Original PosterOP
8 minutes ago, Valkyrie Lenneth said:

prolly put it on the wrong pwm plug, u need to set it to cpu pwm not cpu opt

 

r u sure its in cpu fan pwm on the mobo?

 

if that doesnt solve it just set in monitor mode, ignore cpu fan, it will remove the error

Hi. I have tried both fans in the same socket one at at time and there is no problem. When i use the y splitter is when the problem seems to occur.

Link to post
Share on other sites
1 minute ago, saminam said:

Hi. I have tried both fans in the same socket one at at time and there is no problem. When i use the y splitter is when the problem seems to occur.

splitter removes the RPM reading, so its normal it doesnt see it with a splitter, thats why u have CPU and CPU OPT in modern mobos, its for 2fans :P ( with readings )

 

also i dont recommend using splitters on PWM sockets because if u try to pull too much amperage from a mobo it can damage ( through pwm )


(◑‿◐)

Link to post
Share on other sites
Posted · Original PosterOP
2 minutes ago, Valkyrie Lenneth said:

splitter removes the RPM reading, so its normal it doesnt see it with a splitter, thats why u have CPU and CPU OPT in modern mobos, its for 2fans :P ( with readings )

 

also i dont recommend using splitters on PWM sockets because if u try to pull too much amperage from a mobo it can damage ( through pwm )

 I am currently using the B450 tomahawk and it has no CPU_OPT. It does however have a pump_fan. Would you say this is actually a CPU_OPT simply with a different name ? If its a case of choosing between the splitter (having no rpm reading) and plugging each fan into the cpu and pump *and having a reading) id go with the second option.

Link to post
Share on other sites
10 minutes ago, saminam said:

 I am currently using the B450 tomahawk and it has no CPU_OPT. It does however have a pump_fan. Would you say this is actually a CPU_OPT simply with a different name ? If its a case of choosing between the splitter (having no rpm reading) and plugging each fan into the cpu and pump *and having a reading) id go with the second option.

just put it on the pump fan , every pwm socket should have equal power suply, the only difference be that it will be read as pump probably in monitor XD


(◑‿◐)

Link to post
Share on other sites
Posted · Original PosterOP
2 minutes ago, Valkyrie Lenneth said:

just put it on the pump fan , every pwm socket should have equal power suply, the only difference be that it will be read as pump probably in monitor XD

Ok man ty for the help

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×