On Thu, 28 Feb 2008, Martin Wegener wrote: > Speedstepping works without I probelm (when Cool and Quiet support > is activated in the bios) I've installed the newest bios, but it > didn't help me. And my bios it self does not give the the > possibility to control my CPU-fan speed (There is nothing like Q-fan). Have you tried disabling or at least changing the speed and fan related settings (like Cool and Quiet) in the BIOS to see if that affects anything? I am not sure how common this is, but maybe the BIOS and lmsensors are fighting for control of the hardware. Matt Roberds