Asus PRIME Z390-A [64/100] Chapter 3

3-2

Chapter 3: BIOS Setup

Chapter 3

• The BIOS setup screens shown in this section are for reference purposes only, and

may not exactly match what you see on your screen.

• Ensure that a USB mouse is connected to your motherboard if you want to use the

mouse to control the BIOS setup program.

• If the system becomes unstable after changing any BIOS setting, load the default

settings to ensure system compatibility and stability. Select the Load Optimized

Defaults item under the Exit menu or press hotkey <F5>. See section 3.10 Exit Menu

for details.

• If the system fails to boot after changing any BIOS setting, try to clear the CMOS and

reset the motherboard to the default value. See section 1.1.6 Onboard buttons and

switches for information on how to erase the RTC RAM via the Clear CMOS button.

• The BIOS setup program does not support the Bluetooth devices.

Please visit ASUS website for the detailed BIOS content manual.

BIOS menu screen

The BIOS Setup program can be used under two modes: EZ Mode and Advanced Mode.

You can change modes from Setup Mode in Boot menu or by pressing the <F7> hotkey.

3.2 BIOS setup program

Use the BIOS Setup to update the BIOS or congure its parameters. The BIOS screen

include navigation keys and brief onscreen help to guide you in using the BIOS Setup

program.

Entering BIOS at startup

To enter BIOS Setup at startup, press <Delete> or <F2> during the Power-On Self Test

(POST). If you do not press <Delete> or <F2>, POST continues with its routines.

Entering BIOS Setup after POST

To enter BIOS Setup after POST:

• Press <Ctrl>+<Alt>+<Delete> simultaneously.

• Press the reset button on the system chassis.

• Press the power button to turn the system off then back on. Do this option only if you

failed to enter BIOS Setup using the rst two options.

After doing either of the three options, press <Delete> key to enter BIOS.