How do you get to the CMOS of a computer if you don't know the system password that it is asking for?
(Computer should be turn off) To get to the BIOS/CMOS of the
computer with you not knowing the password, first open the system
unit, then take the CMOS battery and jumper out (refer to the
motherboard documentation to locate the jumper) then set the jumper
from 2 and 3 pins to 3 and 4 pins or from 1 and 2 pins to just 1.
Put the battery back in, then turn on the computer, count to 20.
Turn off the computer, set the jumper back to its original position
then turn the computer back on, try to access BIOS/CMOS the
password should now be gone.