CPU multiplier!

Hi folks, faced with such a problem as not changeable multiplier PERC, PERC , though old, namely Fx4100 , but in any case the clock speed 1400мгц... Put in Beavis in the manual multiplier to any not work, it saves energy and is off in the BIOS and in power! Given the load tests with the same result. Iron , mother asus m5a78l-m LX, fx 4100... Cassette from Sega 8GB , BP chief 650