i have an amd athlon xp,1,8 ghz and till now,the cpu q-fan control and the chassis q-fan control was set on enable but the temperature had begun to increase very much.i modified the settings of this controls(i've let them both on disable) but the pc had begin to make a very annoying sound.in final,i've put the chassis q-fan control on enable and the cpu q-fan on disable.with these settings the sound it's not so annoying but i am not sure i will not have system instability with this configuration.can tell me someone if it is a problem if this controls aren't put always both on enable or disable?