On a PC, how do I reset or remove the CMOS password?
A CMOS password, if present, is one that you must enter when the computer is booting up, before a network or operating system password. Until entering it, you will be unable to run programs, view files, or even start the operating system.
To change the password, restart your computer and enter the CMOS
setup. You usually enter CMOS setup by typing a certain key or
combination of keys as your computer is booting; F2,
Del, and Ctrl-Enter are common
possibilities. However, your BIOS should display a line
during startup explaining which key(s) to type to enter setup, BIOS
setup, or CMOS setup. The setup program should contain a password
option; if you are unable to find it, consult the manual that came
with the computer or motherboard.
If you have forgotten your password, you will need to clear it by physically changing jumpers on your motherboard to short out certain pins, thereby erasing the password. The location of these pins varies from motherboard to motherboard; refer to your computer or motherboard's manual.
Some motherboards have a default password; for example, the AMI BIOS
default password is AMI. Check your computer or
motherboard manual to see whether this exists.
For some older computers, you'll need a reference disk to make changes (including the password) to the CMOS settings.
Last modified on March 31, 2010.
