Biostar A75MH User guide

A75MH / A55MH UEFI BIOS Manual

UEFI BIOS Setup...................................................................................... 1

1 Main Menu ............................................................................................. 3

2 Advanced Menu...................................................................................... 4

3 Chipset Menu ....................................................................................... 17

4 Boot Menu............................................................................................. 25

5 Security Menu ...................................................................................... 27

6 Performance Menu .............................................................................. 28

7 Exit Menu ............................................................................................. 36

A75MH / A55MH UEFI BIOS Manual

UEFI BIOS Setup

Introduction

The purpose of this manual is to describe the settings in the AMI UEFI BIOS Setup

program on this motherboard. The Setup program allows users to modify the basic

system configuration and save these settings to NVRAM.

UEFI BIOS determines what a computer can do without accessing programs from a

disk. This sys tem controls most of the input and output devic es s uch as keyboard,

mouse, s erial ports and dis k drives. BIOS activates at the firs t stage of the booting

process, lo ading and executing the op erating system. Some add itional features, s uch

as virus and pass word protection or chips et fine-tuning optio ns are also includ ed in

UEFI BIOS.

The rest of this manual will to guide you through the options and settings in UEFI

BIOS Setup.

Plug and Play Support

This AMI UEF I BIOS supports the Plug and Play Vers ion 1.0A spec ification.

EPA Green PC Support

This AMI UEFI BIOS s upports Vers ion 1.03 of the EPA Green PC specification.

ACPI Support

AMI ACPI UEFI BIOS support Vers io n 1.0/2.0 of Ad vanced Configuration and

Power interface specification (ACPI). It provides ASL code for power

management and device configuration capabilities as defined in the ACPI

specification, developed by Microsoft, Intel and Toshiba.

PCI Bus Support

This AMI UEFI BIOS also s uppo rts Version 2.3 of the Intel PC I (Peripheral

Component Interconnect) local bus specification.

DRAM Support

DDR3 SDRAM (Double Data Rate III Synchronous DRAM) is supported.

A75MH / A55MH UEFI BIOS Manual

Supported CPUs

This AMI UEFI BIOS supports AMD CPU.

Using Setup

When starting up the computer, press

<Del> during the Power-On Self-Test

(POST) to enter the UEFI BIOS setup

utility.

In the UEFI BIOS setup utility, you will

see General Help description at the top

right corner, and this is providing a brief

description of the selected item.

Navigation Keys for that particular menu

are at the bottom right corner, and you can

use these keys to select item and change

the settings.

Notice

zThe default UEFI BIOS settings apply for most conditions to ensure optimum

performance of the motherboard. If the system becomes unstable after changing

any settings, please load the default settings to ensure s ystem’s compatibility and

stability. Use Load Setup Default under the Exit Menu.

zFor better system performance, the UEFI BIOS firmware is being continuously

updated. The UEFI BIOS information d escribed in this manual is fo r yo ur reference

only. The actual UEFI BIOS information and settings on board may be slightly

different from this manual.

zThe content of this manual is subject to be changed without notice. We will not be

responsib le fo r any mistakes found in this user’s manual and any s ystem damage that

may be c aused by wro ng-s ettings.

A75MH / A55MH UEFI BIOS Manual

1 Main Menu

Once you enter AMI UEFI BIOS Setup Utility, the Main Menu will appear on the

screen providing an overview of the basic system information.

BIOS Information

Shows system information including UEFI BIOS version, Project Code, Model

Name, Build Date, etc.

Total Memor y

Shows system memory size, VGA shard memory will be excluded.

System Date

Set the system date. Note that the ‘Day’ automatically changes when you set the

date.

System Time

Set the s ystem internal clock.

A75MH / A55MH UEFI BIOS Manual

2 Advanced Menu

The Advanced Menu allows you to configure the settings of CPU, Super I/O, Power

Management, and other system devices.

Notice

zBeware of that setting inappropriate values in items of this menu may cause

system to malfunction.

PCI Su bs ystem Settings

A75MH / A55MH UEFI BIOS Manual

PCI ROM Priority

In case of multip le option ROMs (Legacy and EFI Compatible), this item specifies

what PCI Option ROM to launc h

Options: Legacy ROM (Default) / EFI Compatible ROM

PCI Latency Timer

This item sets the value to be programmed into PCI Latency Timer Register.

Options: 32 P CI Bus Clocks (Default) / 64 PCI Bus Clocks / 96 PCI Bus Clocks /

128 PCI Bus Clocks / 160 PCI Bus Clocks / 192 PCI Bus Clocks / 224

PCI Bus Clocks / 248 PCI Bus Clocks

VGA Palette Snoop

This item enables or disables VGA Palette Registers Snooping.

Options: Disabled (Default) / Enabled

PCI Express Settings

No Snoop

This item enables or disables PCI Express Device No Snoop option.

Options: Enabled (Default) / Disabled

A75MH / A55MH UEFI BIOS Manual

Maximum Payload

This item sets Maximum Payload of PCI Express Device or allows System BIOS to

select the value.

Options: Auto (Default) / 128 Bytes / 256 Bytes / 512 Bytes / 1024 Bytes / 2048

Bytes / 4096 Bytes

Maximum Read Request

This item sets Maximum Read Request Size of PCI Express Device or allows

System BIOS to s elec t the value.

Options: Auto (Default) / 128 Bytes / 256 Bytes / 512 Bytes / 1024 Bytes / 2048

Bytes / 4096 Bytes

ASPM Support

This item sets the ASPM Level: Force LO – Force all links to LO State; Auto –

BIOS auto co nfigures; Dis abled – Disab les ASPM.

Options: Disabled (Default) / Auto / Force L0s

ACPI Settings/WakeUp Event control

ACPI Sleep State

This item selects the highest ACPI sleep state the system will enter when the

SUSPEND button is pressed.

Options: S3 (Suspend to RAM) (Default) / Suspend Disabled

A75MH / A55MH UEFI BIOS Manual

S3 Video Repost

This item allows you to enable or disable S3 Video Repost.

Options: Disabled (Default) / Enabled

EuP Control

When EuP is enabled, the system will meet EuP requirement.

Options: Disabled (Default) / Enabled

PME Wake up from S5

The item enables the s ystem to wake from S5 using PME event.

Options: Disabled (Default) / Enabled

Wake system with Fixed Time

This item enables or disables the system to wake on by alarm event. W hen this item

is enabled, the system will wake on the hr::min::sec specified.

Options: Disabled (Default) / Enabled

Wake up date

You can choose which date the system will boot up.

Wake up hour / Wake up minute / Wake up second

You can choose the system boot up time, inp ut ho ur, minute and second to sp ecify.

Ring-In Wake up from S5

This item enables the system to wake from S5 using Ring-In event.

Options: Disabled (Default) / Enabled

PS2 Keyboard PowerOn

This item allows you to control the keyboard power on function.

Options: Disabled (Default) / Any Key / Stroke Key / Specific Key

A75MH / A55MH UEFI BIOS Manual

Stroke Keys Selected

This item will show only when Keyboard PowerOn is set “Stroke Key.”

Options: Wake Key (Default) / Power Key / Ctrl+F1 / Ctrl+F2 / Ctrl+F 3 /

Ctrl +F4 / Ctrl+F5 / Ctrl+F6

Specific Key Enter

This item will show only when Keybo ard PowerOn is set “Specific Key.” Press

Enter to set Specific key.

PS2 Mouse PowerOn

This item allows you to control the mouse power on function.

Options: Disabled (Default) / Enabled

USB Device Wakeup from S3/S4

This item allows you to enable o r d is abled the USB res ume from S3/S4 function.

Options: Disabled (Default) / Enabled

CPU Configuration

A75MH / A55MH UEFI BIOS Manual

Limit CPUID Maximum

When the computer is booted up, the operating system executes the CPUID

instruction to identify the processor and its capabilities. Before it c an do so, it must

first query the processor to find out the highest input value CPUID recognizes. This

determines the kind of basic information CPUID can provide the operating system.

Options: Disabled (Default) / Enabled

C6 Mode

This item allows you to enable or disable C6.

Options: Enabled (Default) / Disabled

CPB Mode

This item allows you to enable or disable CPB.

Options: Auto (Default) / Disabled

AMD PowerNow function

This item allows you to enable or disable the PowerNow power saving technology.

Options: Enabled (Default) / Disabled

SVM

This item allows you to enable AMD virtualization in CPU. This s ecure virtual mode

will let your run multiple OS (guest) on the same physical hardware by decoupling

OS and physical hardware with the hypervisor layer.

Options: Enabled (Default) / Disabled

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