PC Case Fan suddenly not showing in software control

KushCrop

Reputable
Jun 6, 2015
6
0
4,510
my MB is - ASUS Z87 Sabertooth and I control my case fans with AI SUITE 3 with relative ease.

One day (out of the blue) one of the fans started going 100% and the AI SUITE no longer recognizes it as a controllable fan, but simply shows it at max RPM with no means of changing it.

The other fans connected the same way to the MB works fine.

Could a chfan on the mobo die ? or maybe it's the fan?