H170M-ITX/DL CPU fan control

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   The problem is not the fan.  I found tha after a hybrid shutdown in windows 10 the cpu temperature stuck in the last temperature when u shutdown your pc and as a result the fan dont work correctly.  If your pc shutdown in a moment that your cpu temp was high before shutdown it means that your fan will stuck in full speed. 

To make your fan work corectly u need to make a full shudown s5 to resolve it. (disable the hybrid shutdown or shudown with shift pressed). 
This bug is only initiate (and not evert time) only if u have the motherboard to work in uefi mode with cms.  In full uefi mode or in legacy mode this bug don't exist. 

Now i found that if u disable the Overtemeprature protection under hardware monitor even in uefi mode with compatibility mode enabled the cpu temperature initiate correctly every time. But i need more time to test it. 

This bug exist in haswell and skylake a motherboards and many time i wonder how it is possible so many people that use theese motherboards this bug to go undetectable. 
 I have wrote how to recreate the bug.  If the team need more details they can contact me.  

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boombastik1 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 31 Dec 2017 Status: Offline Points: 84	Post Options Post Reply Quote boombastik1 Report Post Thanks(0) Quote Reply Posted: 07 Apr 2019 at 6:16pm
	The problem is not the fan. I found tha after a hybrid shutdown in windows 10 the cpu temperature stuck in the last temperature when u shutdown your pc and as a result the fan dont work correctly. If your pc shutdown in a moment that your cpu temp was high before shutdown it means that your fan will stuck in full speed. To make your fan work corectly u need to make a full shudown s5 to resolve it. (disable the hybrid shutdown or shudown with shift pressed). This bug is only initiate (and not evert time) only if u have the motherboard to work in uefi mode with cms. In full uefi mode or in legacy mode this bug don't exist. Now i found that if u disable the Overtemeprature protection under hardware monitor even in uefi mode with compatibility mode enabled the cpu temperature initiate correctly every time. But i need more time to test it. This bug exist in haswell and skylake a motherboards and many time i wonder how it is possible so many people that use theese motherboards this bug to go undetectable. I have wrote how to recreate the bug. If the team need more details they can contact me.

Alime1954 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Dec 2024 Status: Offline Points: 45	Post Options Post Reply Quote Alime1954 Report Post Thanks(0) Quote Reply Posted: 03 Feb 2025 at 9:55pm
	Hi! It looks like you may have a problem with your BIOS fan control or PWM settings. This behavior where the fan doesn't start spinning until 50% may be related to the BIOS fan settings, which may be set to only run at a certain temperature or RPM. Here are some things to try: Make sure "Fan Control" is enabled in your BIOS and check if the correct temperature thresholds are set. Try setting the fan to a more constant speed via BIOS settings or using special software from the motherboard manufacturer, if available (for example, ASRock F-Stream). Sometimes such problems can be caused by the motherboard itself or incompatibility with certain fan models. Installing a better fan with better speed control may help. If all else fails, you may want to consider replacing the fan to avoid putting unnecessary strain on it.
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