My PC stop working , beep and not load anything ,

Question

I was changing some values in BIO config,
I set up my CPU speed 800 (100x8) and something else under it , before was desabled, and set up it some MHRz 133 i think,
when I restart , cant load the BIO, the system proccess , the light is red 1 sec, and then turn green m, , beep 2 time and stay ,, keybord not connect or like no light on keyboard,,

please h**l me .. how i can fix this ?