03-05-2020 10:19 AM
There are two different possibilities: sensor and fan.
In terms of the first, the sensor that detects a connected fan (one using the proper fan connector) has failed -- and if that is the case, there is nothing you can do about it. You would check this by connecting a fan that is KNOWN to work and to be connected using a different motherboard or fan port.
In terms of the second, the fan circuitry has failed -- and you would check this by connecting a KNOWN working fan.
Not all fans are alike, even if they look the same, so you would have to try different ones -- but if you consistently get the warning message, the safe bet is that the onboard sensor has failed.
Didn't find what you were looking for? Ask the community