Chapter 5
Firmware
Lab Exercises
5.01 Identifying BIOS/UEFI Firmware
5.02 Accessing BIOS/UEFI Settings via the BIOS/UEFI Settings Program
5.03 Configuring and Clearing BIOS/UEFI Settings Program Passwords
Firmware is software stored in a chip. Every computer has at least one type of firmware: the basic input/output system (BIOS). The BIOS provides the primary interface between the operating system’s device drivers and most of its hardware. Although modern BIOS/UEFI firmware is automated and tolerant of misconfiguration, a good PC technician must be comfortable with situations in which the BIOS may need some maintenance or repair.
A PC needs the BIOS to tell it how each basic ...
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