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Hi! I usually send my computer to hibernate after I finished my things to do. But after the system stopped (no fans spinning, the same condition, after a shut down) it starts booting again. I'm thinking, it's more like a software thing in the OS. I updated a BIOS back to an older version, when it didn't did that restarting bullshit, but that didn't solved my problem. So I'm curious, that the solution isn't here. I not really have any idea which softwere does it, I tried to test with certain drivers removed, but I didn't found any change. I think the best way to look after would be to view in the Windows Event History (or something like that, idk the exact name) why it does it, but I don't have any clue how to do. Can someone help me to troubleshoot this problem? P.S. Sorry for my bad english, I'm not a native speaker. And thanks to everyone who helps !

I have the option to chose between DC and PWM only the 3rd fan/pump header, and when there is a (3 pin) fan plugged in to the 3rd cha fan header, it only works when PWM is set. Yes, I've adjustad in the BIOS all fan speed to be lower at certain temps, which work on the 4pin cpu fan, and on a 3pin fan, if that is plugged into 2nd cha header. I ordered an Y-cable with the 2 Corsair fans, which was plannad to be used, but it arrived later, and I was curious how to solve this, if I need to in the future. Until it's arrived, I used a Noctua low noise adaptor, that came with the CPU, and it was a good temp solution.

Hi! I recently built a system based on the Asrock Z270 Pro4 motherboard. My problem is about the fan controlling. The board has four 4pin connectors for fans. For the CPU connector I connected a 4pin fan, the fan curve working fine. But I have other 3 case fan connectors, in which I've fans (2pcs of Corsair SP120 fans, and 1 other, which is some CoolerMaster fan, that was included with the case (there is another, which is not connected)) which use 3pin connectors. I know, that 3pin fans, couldn't be controlled with pwm, only just with voltage regulation. But what I found weird, is the thing that the 2nd case fan connector works also based on the fan curve, doesn't matter, which fan is connected to it. But to the 1st and 3rd (which can be also used as water pump connector) connectors connected fans just always run at the max speed, and I couldn't controll it, although all 3 case fans have the same settings. I've both tried to set those in the Asrock UEFI BIOS and in Asrock's A-Tuning software, but got the same result. (In the A-Tuning software I can run fan test, which measures that, what's the fan speed at a given fan power. And the 1st and 3rd shows through the fan power scale (10-100%) around the max rpm of the fan. In case of the other 2 fans it's showing "normal" rpm-s.) I hope it's understandable. (And sorry for my bad English, it's not my native language.) Thanks any help.