Links to a set of articles at About.com – Common methods for accessing your BIOS

How To Access the BIOS Setup Utility
http://pcsupport.about.com/od/fixtheproblem/ht/accessbios.htm

BIOS Setup Utility Access Keys for Popular Computer Systems
http://pcsupport.about.com/od/fixtheproblem/a/biosaccess_pc.htm

BIOS Setup Utility Access Keys for Popular Motherboards
http://pcsupport.about.com/od/fixtheproblem/a/biosaccess_mb.htm

BIOS Setup Utility Access Keys for Major BIOS Manufacturers
http://pcsupport.about.com/od/fixtheproblem/a/biosaccess_bios.htm