How to Bypass BIOS Passwords

BIOS passwords can be add extra layer of security for desktop and laptop computers, and are used to either prevent a user from changing the BIOS settings or to prevent the PC from booting without a password. BIOS passwords can also be a liability if a user forgot their passwords, or if a malicious user changes the password. Sending the unit back to the manufacturer to have the BIOS reset can be expensive and is usually not covered in an a typical warranty. However, there are a few known backdoors and other tricks of the trade that can be used to bypass or reset the BIOS password on most systems. ('How to Bypass BIOS Passwords')

See also Elf Qrin's article and i-hacked article (mirrored from abmice.techtarget.com). Also check this and this from computerhope. They are all similar but I was hesitate to choose one!