Question PC Boot Issue: Dark Rock 4 Fan Stops, Black Screen, System Unresponsive

[Farien__]

Hello everyone,

Recently, when I turn on my PC, my Dark Rock 4 fan cpu spins for a few seconds and then stops. As a result, my PC doesn't boot up and stays stuck on a black screen. It powers off immediately when I press the power button (I don't need to hold it down for three seconds).

I’ve tried unplugging and replugging everything, and in those cases, I face the same issue with the CPU fan. However, the PC does manage to boot, even with the CPU fan not spinning.
All other case fans are working perfectly fine.

Where do you think the issue could come from? What should I try to fix it?

Configuration:

• be quiet! Dark Rock 4
• GIGABYTE B550 Gaming X
• AMD Ryzen 5700X
• 32GB DDR4 RAM (3600 MHz)
• NVIDIA GeForce RTX 4070 Ti
• be quiet! Pure Power 12 M (850W) 80 PLUS Gold
• be quiet! Pure Base 500 Case

 

[Colif]

Do you have latest bios on motherboard? link

guess it be hard to update anyway when its like this.

so bios can recognise the fan is there but it doesn't spin it up? what header on board is the CPU FAN running off? some boards will boot even if the CPU_FAN header is empty

my aio fans stop at startup until windows starts and then they start. I have to watch them just in case one day they don't start up.

try removing some ram and boot with 1 stick in?
I found this, same story but it appears he bought new parts to fix it - https://forums.bit-tech.net/index.php?threads/pc-wont-boot-boot-after-new-cpu-cooler.221071/page-2

how old is the cooler? I assume fan doesn't make any noises when running that would indicate its the problem