A CMOS password, if present, is one that you must enter when the computer is booting up. It comes before a network or operating system password. You will not be able to run any programs, view files or even enter the operating system if you do not enter this password.
If you find you'd like to change the password, this can be done by restarting your computer and entering the CMOS setup. CMOS setup is usually entered by typing a certain key or combination of keys as your computer is booting up. The DEL (delete) key or Ctrl/Enter are common ones. However, your BIOS should show a line explaining which key(s) to type to enter SETUP, BIOS SETUP, OR CMOS SETUP. There should be a password option in the setup program. If you are not able to find this option you will need to 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, so you will need to 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 for the default password. It's worth trying this password if you don't know, or have forgotten the CMOS password.
Some older computers required you to have a "reference disk" in order to make changes to the CMOS settings, which would include the password.
If the above options do not provide enough security for you, download Access manager for Windows.
Access manager provides much more security than standard ways in Windows.
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