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ASUS Support Home Location : Forum > Motherboard > P8Z77-M PRO  
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  Topic : [Problem]Fans RPM Error. New Topic
João Luís
Posts : 1
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Tech Points : 1
From: Portugal
Posted:4/11/2013 8:31:00 AM # 1
I recently bought a P8Z77-M PRO board. When I enter the bios with all the default, gives the CPU Fan error and sends press F1. When will I see on standart, the CPU fan is at 300 rpm. I have a Cooler Master Hyper 212 Plus, with a Noctua fan of 1500 Rpm. What's going on? I have to put everything on manual, and give percentages for the fans work properly? You can not fix this? Thank you.

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Ulrich
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From: United States
Posted:4/11/2013 9:48:00 AM # 2
Hi J..

What is going on is that the CPU fan is turning too slowly.. the BIOS wants to see at least 600RPM or it throws the error message... 

This is a user Forum.. so no one here could fix anything.. but you 'may' be able to. 

Enter your BIOS 'Monitor' section and see if there is a switch called 'CPU Fan Low Speed Limit'.. and if there is, set that to 200 or 300RPM.. save and exit the BIOS... and see if that solves the problem.

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There are 10 kinds of people in the World...Those who understand binary, and those who dont!
Bong
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From: Philippines
Posted:4/12/2013 4:03:00 AM # 3

Quote:
Author: João Luís Posted: 4/11/2013 8:31:00 AM

I recently bought a P8Z77-M PRO board. When I enter the bios with all the default, gives the CPU Fan error and sends press F1. When will I see on standart, the CPU fan is at 300 rpm. I have a Cooler Master Hyper 212 Plus, with a Noctua fan of 1500 Rpm. What's going on? I have to put everything on manual, and give percentages for the fans work properly? You can not fix this? Thank you.


Boot it first to your windows and download HWMonitor. Then look for the RPM of your CPU Fan if it is really 300RPM try clearing your cmos or disable fan expert in your bios

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Z77 3770K Kingston HyperX 1600 @ 7-7-7-20 ATI HD 7870
Chimera
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Posts : 40
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Tech Points : 54
From: Switzerland
Posted:7/8/2013 10:36:00 PM # 4
The problem is: the old non-PWM fans from Noctua, you can't control them on a PWM header, only by voltage like on a 3 pin fan header or on some 4 pin (with the option of voltage control). So if the BIOS doesn't gives the possibility to control them by voltage, you can't use them right like normal PWM fans. That's also why Noctua puts the 2 adapters LN and ULN to the fans. Had the same problem with my NH-U9B SE and NH-U12P SE2 with the original Noctua fans: every boot i get the stupid error. Before the P8Z77-M Pro i used the cooler on a P7P55D and that board had no voltage control on the CPU fan header, so i had enough of that error message and put some EKL Wing Boost PWM on the cooler and on the smaller cooler the Deepcool UF92 (same like the EKL Wing Boost and the Xilence) so i can use them with PWM and can make my own fan profile with Fan Xpert.>Now i don't know, if the P8Z77-M Pro gives you the chance for fan control with voltage, because since that story i only use the very good Wing Boost fans (in 92mm, 120mm and 140mm -> even with full speed not loud). You should look at the BIOS/UEFI. If it doesn't, maybe it's better to get a PWM fan. Or, the other option: control them with a external fan controller :-) >If you got already the new PWM fans from Noctua, than you only should go down with the limit at UEFI. I made my setting so, that the fan starts spinning with 300 RPM and the limit for error i put at the deepest possible (don't know, if it's 200 RPM or 100RPM) and since there no problemo :-) For monitoring, there you can use HWmonitor, HWinfo32, Everest, AIDA64, etc., there are a few good one.

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