I had some problem with my old graphic card so I just set the fan speed to be 60% all the time. After I changed my graphic card, I tried to set it back to auto again, but it just won't let me click on auto control (greyed out) even after I click on "Enable low-level fan control." (I can only change the fixed fan speed but it doesn't seem to work). So I tried other programs (afterburner, evga precision) and the fan's minimum speed is set to 65%, so even if I slide my fan speed all the way down on those programs, I can only lower it till 65. my nvidia graphic driver version is 260.99. could that be a problem? Is there a way to fix this?