Crazy Gpu Fan behavior

[Pristar4]

Hey! I Run in to this issue that my Rtx 2080 after booting up will only make 2 out of the 3 fans Spin also they Spin at 100%, Temps are low and strangely always when i turn off or i turn my pc on all three fans are Spinning as expected only once windows booted up they seem to break. therefore i suspect that the Error must be within Windows and software. Any Help very much appreciated!

 

Also i can hear like a failing ramping up of a fan or so ca 10 sec after i get into the windows desktop

 

 

Things I tried:

Uninstall Drivers

Clean Gpu

Replug Gpu 

 

[kb5zue]

In your post you stated that "temps are low", what is the possibility the third fan isn't running because it doesn't need to run to keep the temps low?  Just a thought.......

[mr fobs]

Yes it could be the software used to control you GPU (Overclocking/fan speed/etc) is turning off fans when they are not needed. 

 

I have an ASUS ROG RTX 3090 and 2 case fans attached to the fan headers on it. When temps are below 48C the fans do not spin on both the card and case. Sometimes only 2 of the gpu fans spin, but the case fans remain off until they are needed.

[Pristar4]

okay i just tried booting on a independent fresh install

and there the same problem occured ( one same pc) however after switching back to the main boot now all fans magically spin i am scared to start msi afterburner or so 

 

Edit:

also the temps are at 42 right now in  idle