I tried est + estctrl, but it didn't work. I browsed Intel webpages and realised, that Celeron M (my CPU) does not support SpeedStep. It si supported only on Pentium M processors! Thaks for all advices :-) --- reklama ----------------------------------------------------- Pracovné ponuky aj zo zahraničia nájdete na Kariére. http://kariera.zoznam.sk