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AMD X670/B650/A620 Series
Chapter 3 UEFI SETUP UTILITY
3.1 Introduction
ASRock UEFI (Unied Extensible Firmware Interface) is a BIOS utility which oers tweak-
friendly options in an advanced viewing interface. e UEFI system works with a USB
mouse and oers 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 congured 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 congurations
or change the settings only with the assistance of a trained service person.
If the system becomes unstable or fails to boot aer 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 aer 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 aer POST, restart the system by
pres
sin
g <Ct
l> + <A
lt
> + <De
lete>, or by pres
sin
g th
e rese
t but
ton on t
he sy
stem c
has
sis
.
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 congure all the
supported system. e screenshots in this manual are for reference only. UEFI Settings and
options may vary owing to dierent BIOS release versions or CPU installed. Please refer to
the actual BIOS version of the motherboard you purchased for detailed screens, settings
and options.
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