Thanks a million!The problem very likely is that those case fans, Corsair AF140L, are of the 3-pin variety. Look closely at their electrical cables and you should see that they have three wires in them. They require an adjustment in the configuration settings of the fan header each is plugged into - probably CHA_FAN1, 2, and 3. See your mobo manual p. 3-7. For EACH of the headers used by those fans, look at the top right of that screen and choose the "DC" option. When you have them all adjusted, use Esc to return to the Main Menu, then F10 to get to the Exit Menu p. 3-19. There choose Save Changes and Reset to save your new settings and reboot. That should allow your mobo headers to control those fans' speeds properly.
You do NOT want to turn off all your fans and deprive your system of heat removal!
Finally no problem with my case. Fans is very quite and you help me very much.The problem very likely is that those case fans, Corsair AF140L, are of the 3-pin variety. Look closely at their electrical cables and you should see that they have three wires in them. They require an adjustment in the configuration settings of the fan header each is plugged into - probably CHA_FAN1, 2, and 3. See your mobo manual p. 3-7. For EACH of the headers used by those fans, look at the top right of that screen and choose the "DC" option. When you have them all adjusted, use Esc to return to the Main Menu, then F10 to get to the Exit Menu p. 3-19. There choose Save Changes and Reset to save your new settings and reboot. That should allow your mobo headers to control those fans' speeds properly.
You do NOT want to turn off all your fans and deprive your system of heat removal!