Computer stopped working after changing the cpu from 2.00ghz to 3.00ghz!?!?!?

I set my cpu frequency from 2.00ghz to 3.00ghz, and now my computer just locks up (have to manually turn off by switch) and it won't show any picture on screen. so i can't access bios to turn it off. i have a winfast mobo with an amd dual cpu. any ideas on how to reset back to normal? Please help!!Computer stopped working after changing the cpu from 2.00ghz to 3.00ghz!?!?!?take out the little cmos battery and leave it out for a few minutes, this should reset the bios back to default, replace the battery and plug the pc back in and try to enter bios and make sure it is back to normal settings and hope you didnt cook the cpuComputer stopped working after changing the cpu from 2.00ghz to 3.00ghz!?!?!?What in the world were you thinking? Take the ram out and try booting. YOu need to get to the bios. Of course, that's likely not to happen, you have a no post problem due to a toasted processor. IF... you are lucky enough to get the Bios to post, change everything back to default.