Ehi guys,
I've been having this issue for few days now...on x299 Dark with bios chip #2 version 1.14 I cannot get the Vram fan to actually been detected as PWR fans and they are continuously sniping at 100%.
There is something I can do tho shut them down other the remove the connection?
I've been trying to flush the bios again, switching to #3 and back to 32 still same problem...thanks

The VRM fans are controlled under the PWR_FAN line
In the fan settings when you click the "+" on the fan speed eventually it goes to max then smart if that option is available - you want it on smart
Ignore where the cursor is in the below pictures as it is not relevant to this
 

 
 
When you click on the actual line that saysSmart Fan Settings just below PWR_FAN a new menu will open up - make sure it looks something like the picture below
 
 

The fact is that I got NA in PWR_FAN and got everything else on smart and same PWR temperature settings...i’ve flushed again the bios and now seems fine...need to test on a cold boot

This is how I have mine set, RPM @ 2772

Sach screen shot it - F12 while in bios, you need to have an USB drive plugged into the board
 
If PWR fan is running max speed but you have NA reported in bios then it sounds like you have something not correctly plugged in or somehow nicked a wire

GGTV-Jon
Sach screen shot it - F12 while in bios, you need to have an USB drive plugged into the board
 
If PWR fan is running max speed but you have NA reported in bios then it sounds like you have something not correctly plugged in or somehow nicked a wire

Or maybe the Connector was remove or moved.

Cold boot now and again NA and 100%...was working fine this afternoon when I swithed to bios #3 and reset mos 10s...PWR was detected
 
 
I have no OC on CPU and just XMP enabled everything else default

need to check the vrm fan header plugins then

Hello from Germany,
 
i have the nearly the same problem with the pwr_fan on my X299 FTW K. It spins @100 % all the time and the noise is really annoying. 
 
I have the latest Bios installed 1.17
 
I can't change it in the bios settings. The fan ignores all the settings i tried so far.  
I tried "off" , 5 % , 10 % .

Hello again,
 
i solved my problem by loading the BIOS Default Settings.
 
Now i'm able to change the settings for the vram fan. 
 
It's so nice , the high pitch noise of the fan is gone...  
 
Cheers
Kai