ASROCK Z790 Series - Chapter 3: UEFI Setup Utility Guide; 3.1 UEFI Introduction and Navigation; 3.1.1 Entering BIOS Setup

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Intel Z790/H770/B760 Series
Chapter 3 UEFI SETUP UTILITY
3.1 Introduction
ASRock UEFI (Unied Extensible Firmware Interface) is a BIOS utility which oers tweak-
friendly options in an advanced viewing interface. e UEFI system works with a USB
mouse and oers users a faster, sleeker experience.
is BIOS utility can perform the Power-On Self-Test (POST) during system startup,
record hardware parameters of the system, load operating system, and so on. e battery on
the motherboard supplies the power needed to the CMOS when the system power is turned
o, and the values congured in the UEFI utility are kept in the CMOS.
Please note that inadequate BIOS settings may cause system instability, mulfunction or
boot failure. We strongly recommend that you do not alter the UEFI default congurations
or change the settings only with the assistance of a trained service person.
If the system becomes unstable or fails to boot aer you change the setting, try to clear
the CMOS values and reset the board to default values. See your motherboard manual for
instructions.
3.1.1 Entering BIOS Setup
You may run the UEFI SETUP UTILITY by pressing <F2> or <Del> right aer you power
on the computer; otherwise, the Power-On-Self-Test (POST) will continue with its test
routines. If you wish to enter the UEFI SETUP UTILITY aer POST, restart the system by
pressing <Ctl> + <Alt> + <Delete>, or by pressing the reset button on the system chassis.
You may also restart by turning the system o and then back on.
is setup guide explains how to use the UEFI SETUP UTILITY to congure all the
supported system. e screenshots in this manual are for reference only. UEFI Settings and
options may vary owing to dierent BIOS release versions or CPU installed. Please refer to
the actual BIOS version of the motherboard you purchased for detailed screens, settings
and options.