Fans problem, bios says that there is only 1 fan instead of 5 & my psu fan isn't working ? (Solved)

[semih]

Hello,

I am new to this forum and new to pc building itself. So far I have installed the cpu, the ssd, the ram, the box cooling (nzxt Kraken x61), PSU and I have changed the 3 front fans to the top because I wanted to install the box cooling (It is called box cooling right?) on the front side.

I hooked up to a screen and started it up. Went into the bios and I see that the ssd, the ram, and the cpu. when I look at the fans I only see 1 fan instead of 5 (1 in the rear 3 on top and 2 on the box cooling). Does it have to be like this or did I do something wrong.

My list of all the components that I will use in my build are:

NZXT Kraken X61
Asus Z170 Pro Gaming
Intel Core i7-6700K - Boxed
Corsair Vengeance LPX - DDR4-3000- 32 GB
Corsair RMx - 750W
NZXT H440 New Edition
MSI GeForce GTX 1080 - Gaming X - 8GB GDDR5X
Samsung SSD 1TB

I also have

Asus PCE-AC68 (for WIFI for some circumstances)
Asus SDRW-08D2S-U Lite (when I need to use cd's. mainly bought for installing drivers?)

I hope that someone understands my problem.
I can also post pics of the bios and of the build so far. (I am new so I maybe need some help posting the pics)

Ps: I also followed some guides and vids on how to build the pc, I could also post the links if needed.

 

[VirtualLarry]

When you powered it on, did it boot? (I'm guessing so, if you could see the BIOS.)

Did you look at all of the fans in the case, to see if they were turning?

If they were, then probably nothing to worry about.

Most main BIOS UEFI screens prominently show the CPU fan RPM, some may show the secondary fans too. If it does show the secondary fans, and their RPM is zero, then something may be wrong. Not seeing the secondary fans show up at all may not be an error, depending on your UEFI's design.

 

[semih]

When you powered it on, did it boot? (I'm guessing so, if you could see the BIOS.)

Did you look at all of the fans in the case, to see if they were turning?

If they were, then probably nothing to worry about.

Most main BIOS UEFI screens prominently show the CPU fan RPM, some may show the secondary fans too. If it does show the secondary fans, and their RPM is zero, then something may be wrong. Not seeing the secondary fans show up at all may not be an error, depending on your UEFI's design.

yes it did boot, and yes all of them were turning. btw the psu fan was also turning and I read of other threads that it is normal because it only keeps spinning when it needs to cool the psu. and what I don't understand is what the cpu fan is about, is it about all the fans or just the fans for the cpu so the cooling system. the other fans are called cha1 fan, cha2 fan, cha3 fan, cpu opt fan, ext fan1, ext fan 2, ext fan 3. And I am trying to install windows 10 right now, will it harm it before I fixed this problem (I don't think so but asking never hurts right)?

 

[Ketchup]

From what I have read about this case, it has it's own built-in fan controller, so the motherboard probably won't give you a correct number for chassis fans. So if you are seeing good cpu fan speed numbers, you are good.

 

[semih]

From what I have read about this case, it has it's own built-in fan controller, so the motherboard probably won't give you a correct number for chassis fans. So if you are seeing good cpu fan speed numbers, you are good.

Yes, I have a fan controller and as I said I am new to building pc's . The fan speed was around 800 rpm, is that good or is it bad?

 

[denis280]

Yes, I have a fan controller and as I said I am new to building pc's . The fan speed was around 800 rpm, is that good or is it bad?

on idle yes.and it will go up when neded

 

[Paperdoc]

I'm guessing you connected all your fans as the case instructions said. That means there was one connector cable from the included Fan Hub to the mobo's CPU_FAN header and one cable from the Hub to a PSU power output connector. Then you plugged your actual CPU cooler system into the Hub's 4-pin Port #1, and all your case fans into other 3-pin output ports on the Hub.

Now, the way any fan's speed is displayed is that the fan itself generates a pulse train signal that is sent back to the mobo fan header on Pin #3. The important limit here is that the fan header can only accept and deal with the speed pulse signal from ONE fan. So any proper fan Splitter or Hub (you have the latter) will forward back to its mobo header the signal from ONLY the fan plugged into the Hub's Port #1. It is quite important that the CPU cooling system be monitored carefully for possible failure by the mobo, so the Hub always instructs you to be sure that it is the CPU cooler that you plug into the Hub's Port #1. That way the mobo CPU_FAN header CAN monitor the actual CPU cooler function properly. But this also means that none of your case ventilation fans' speeds can be displayed, because they all are plugged into Hub ports that do NOT send their signals to any place on the mobo.

This is NOT a problem, except that you don't get to see those fan speeds. For purposes of controlling the speed of those fans, the mobo does NOT need to know the speeds. In fact, what is really going on in your system as it is set up is that the actual temperature inside the CPU chip, measured by a sensor built into that chip, is being used by the mobo to manage all the fans in your system - both the CPU cooler and all the case vent fans. Those fans will speed up or slow down automatically according to the actual internal temperature of the CPU chip. The only small problem with this arrangement is this: there is no way for your mobo to monitor those case fans' speed signals for possible FAILURE, which is not the same as speed control. So it is up to you to check all your fans from time to time to be sure they still are operating and not dead.

Your mobo is designed with two "groups" of fan headers, each operating similarly. The first is the main one for CPU chip cooling, the CPU_FAN, and there is a related one called CPU_OPT. Both of these use as their reference point the actual temperature measured inside the CPU chip by a built-in sensor, and they both are intended to ensure proper cooling of the CPU chip. They do this by altering the speed of the fan(s) plugged into them. The other group is the three CHA_FAN headers. These all are intended to concentrate on cooling the mobo components and are guided by a different temperature sensor built into the mobo by its maker. (Actually, your mobo has more choices than most - it allows you to select for each of these headers which of several built-in sensors is used.) Under "normal" circumstances you would plug your case ventilation fans into these headers and let the mobo control them automatically, independently of what the CPU temperature is. But you have opted to follow the instructions and equipment included with your case, and that means that all your fans (CPU cooling and case vent) are under automatic control based on the CPU internal temperature, and using the case's included Hub as the means of connecting all the fans. I am not suggesting you change your set-up, although that could be done if you wish. If you want to do that, post back here for advice on how.

Quick summary: what you are seeing is normal and no cause for worry.

 

[semih]

I'm guessing you connected all your fans as the case instructions said. That means there was one connector cable from the included Fan Hub to the mobo's CPU_FAN header and one cable from the Hub to a PSU power output connector. Then you plugged your actual CPU cooler system into the Hub's 4-pin Port #1, and all your case fans into other 3-pin output ports on the Hub.

Now, the way any fan's speed is displayed is that the fan itself generates a pulse train signal that is sent back to the mobo fan header on Pin #3. The important limit here is that the fan header can only accept and deal with the speed pulse signal from ONE fan. So any proper fan Splitter or Hub (you have the latter) will forward back to its mobo header the signal from ONLY the fan plugged into the Hub's Port #1. It is quite important that the CPU cooling system be monitored carefully for possible failure by the mobo, so the Hub always instructs you to be sure that it is the CPU cooler that you plug into the Hub's Port #1. That way the mobo CPU_FAN header CAN monitor the actual CPU cooler function properly. But this also means that none of your case ventilation fans' speeds can be displayed, because they all are plugged into Hub ports that do NOT send their signals to any place on the mobo.

This is NOT a problem, except that you don't get to see those fan speeds. For purposes of controlling the speed of those fans, the mobo does NOT need to know the speeds. In fact, what is really going on in your system as it is set up is that the actual temperature inside the CPU chip, measured by a sensor built into that chip, is being used by the mobo to manage all the fans in your system - both the CPU cooler and all the case vent fans. Those fans will speed up or slow down automatically according to the actual internal temperature of the CPU chip. The only small problem with this arrangement is this: there is no way for your mobo to monitor those case fans' speed signals for possible FAILURE, which is not the same as speed control. So it is up to you to check all your fans from time to time to be sure they still are operating and not dead.

Your mobo is designed with two "groups" of fan headers, each operating similarly. The first is the main one for CPU chip cooling, the CPU_FAN, and there is a related one called CPU_OPT. Both of these use as their reference point the actual temperature measured inside the CPU chip by a built-in sensor, and they both are intended to ensure proper cooling of the CPU chip. They do this by altering the speed of the fan(s) plugged into them. The other group is the three CHA_FAN headers. These all are intended to concentrate on cooling the mobo components and are guided by a different temperature sensor built into the mobo by its maker. (Actually, your mobo has more choices than most - it allows you to select for each of these headers which of several built-in sensors is used.) Under "normal" circumstances you would plug your case ventilation fans into these headers and let the mobo control them automatically, independently of what the CPU temperature is. But you have opted to follow the instructions and equipment included with your case, and that means that all your fans (CPU cooling and case vent) are under automatic control based on the CPU internal temperature, and using the case's included Hub as the means of connecting all the fans. I am not suggesting you change your set-up, although that could be done if you wish. If you want to do that, post back here for advice on how.

Quick summary: what you are seeing is normal and no cause for worry.

I have put the cable from the CPU cooler system into the CPU_FAN and the PMW cable into the CPU_OPT. I am sure that you know what PMW stands for but to explain it if you don't it is the cable from the fan control system or something, all the fans including 4 and 3 pins can be plugged into it and you only need to put one of the cable into one of the cpu_fan or cpu_opt. But you explained everything really perfectly. I thank you and the others so much with trying to help!!!

 

[semih]

And is there a way to close this thread and/or to make your reply a ''answer'' like they do it on other forums?

 

[Mike64]

And is there a way to close this thread and/or to make your reply a ''answer'' like they do it on other forums?

Nope...

 

[corkyg]

You can edit your title to add (Solved). I did this for you. We generally leave threads open so that other users with the same problem can continue the discussion.