This equipment has been tested and found to comply with the limits of a Class
B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protec tion ag ainst harmful interfe rence in a residential
installation. T his equipment generates, uses, and can radiate radio frequency
energy and, if not ins talled and used in accordance with the instructions , may
cause harmful interference to radio communications. There is no guarantee
that i nterference wil l not occur in a pa rticula r ins ta lla tio n .
The ve ndor makes no re p resenta tions or warran ties wi th respec t to th e
contents here and specially disclaims any implied warranties of merchantability
o r fi tnes s fo r a ny p u rp os e . Fu rthe r t he ve nd o r res e rves t he ri ght to r ev is e t his
publication and to make changes to the c ontents here without obligation to
notify any party beforehand.
D uplic a tion of this publicatio n , in pa rt o r in wh ol e, is no t allowed wit ho ut first
obtaining the vendor’s approval in writing.
The content of this user’s manual is subject to be c hanged without notice and
we will not be responsible for any mistakes found in this user’s manual. A ll the
brand and produc t names are trademarks of their respective companies.
Japanese ..............................................................................................40
Page 3
CHAPTER 1: INTRODUCTION
1.1 BEFORE YOU START
Tha nk you for choosing our product. Before you start ins talling the
mo therboa rd, plea se make sure you fo llo w the ins tructio ns be lo w:
Prepare a dry and stable working environment with
s uf ficie nt ligh ting .
Always disconnect the computer from power outlet
be fo re ope ration .
Befo re yo u take the mo the rbo a rd ou t f rom a n ti -s ta ti c
bag, ground yourself properly by touching any safely
grounded applian ce, o r use gro unded wrist strap to
remove the static charge.
Avo id tou ch ing the com pone nts on mo the rboa rd or the
rea r side of the boa rd un les s necessa ry. Ho ld the boa rd
on the edge , do not try to be nd or flex the boa rd.
Do no t lea ve any unfas tened sma ll pa rts inside the
case after installation. Loose parts will cause short
circuits which may damage the equ ipment.
Keep the computer from dangerous area, such as heat
sou rce , humid a ir and water.
1.2PACKAGE CHECKLIST
HDD Cable X 1 Se ria l ATA Cab le X 1 Use r’s Ma nual X 1
Fully Setup Driver CD X 1 Rear I/O Panel for ATX Case X 1 FDD Cable X 1 (optional) USB 2.0 Cable X1 (optional) S/PDIF Cable X 1 (optional) Se ria l ATA Po we r Cab le X 1 (o ptio nal )
Note: The package contents may differ by area or your motherboard version.
G31-M7
1
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Motherboard Manual
1.3 MOTHERBOARD FEAT URES
SPEC
LGA 775
CPU
FSB Support 533 / 800 / 1066 / 1333 MHz
Chipset
Super I/O
Main
Memory
Graphics GMA 3100 Max S hared Video Memory is 256MB
IDE Integrated IDE Controller
SA TA 2 I nt e gr at ed S eri a l AT A C ont r ol l er
Front Panel Connector x1 Supports fr ont panel facilities
Front Audi o Connector x1 Supports front panel audio function
CD-in Connector x1 Supports CD audio-in functi on
S/PDIF out connector x1 Supports digit al audio out function
CPU Fan header x1 CPU Fan power s upply (with Smart Fan function)
System Fan header x1 System Fan Power supply
Cl ear CMOS header x1 Rest ore C MOS data to fact ory default
USB connector x2 Each connector supports 2 front panel USB ports
Power Connector (24pin) x1 Connects to Power supply
Pow er Connect or (4pin) x1 C onnects to Power s upply
PS/2 Keyboard x1
PS/2 Mouse x1
Back Panel
I/O
Board S ize 195 (W) x 244 (L) mm
OS S upport Windows 2000 / X P / V ISTA
S e ri a l P ort x 1
VGA port x1
LAN port x1
USB Port x4
Audio Jack x3
G31-M7
Connects to PS/2 Keyboard
Connects to PS/2 Mouse
Pr ovi de RS- 232 Seria l c onnectio n
Connec t to D-SUB moni tor
Connec t to RJ-45 ether net c able
Connect to USB devices
Provide Audio-In/O ut and microphone c onnection
Biostar Reserves the right to add or remove support for
any OS with or without notice
1.4R
PS/2
Mouse
PS/2
Keyboard
Since t he au dio c hip s upports H i g h Defi ni ti on A udi o Specific atio n, the func tion of eac h a udi o
jack c an be d efine d b y sof tware. T he in put / out put fu nc ti o n of e ach au di o j ac k l isted ab o ve
represe nts th e def ault s etti ng . Ho we ver, w he n c o nnec ting e xt er nal mi croph on e to th e a udi o port ,
pleas e use t he Line In ( blue) an d Mic In (Pi nk) au dio jac k.
EAR PANEL CONNECT ORS
COM1VGA
LA N
Line In/
Surround
Line Out
Mic In 1/
Bass/ Center
USBX2USBX2
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Motherboard Manual
1.5MOTHERBOARD LAYOUT
JKB MS1
J
C
O
M
1
JVGA1
JATXPWR2
JUSB2
JRJ45 USB1
JAUDIO1
JAUDIOF1
J CDI N 1
JUSBV1
LAN
BI O S
PEX1_1
LGA775
CPU1
Intel
G31
BAT 1
JCFAN1
JATXPWR1
DDR2_B1
DDR2_A1
IDE1
S uper
I/ O
JSPDIF_OUT1
Codec
Not e: ■ represents the 1st pin.
4
PE X16 _1
PCI1
PCI2
FDD1
JUSBV2
Intel
ICH7
JUSB4JUSB3
JPA NEL 1
JSFAN1
SATA4
SATA3
SATA2
SATA1
JCMOS1
Page 7
CHAPTER 2: HARDWARE INSTALLATION
2.1 I
NST ALLING CENTRAL PROCESSING UNIT (CPU)
G31-M7
Special Notice:
Remove Pin Cap before installation, and make good preservation
for future use. When the CPU is removed, cover the Pin Cap on the
empty socket to ensure pin legs won’t be damaged.
Pin-Cap
Step 1: Pull the socket locking lever out from the socket and then raise
the lever up to a 90-degree angle.
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Motherboard Manual
Step 2: Look for the triangular cut edge on socket, and the golden dot on
CPU should point forwards this triangular cut edge. The CPU will
fit only in the correct orientation.
Step 2-1:
Step 2-2:
Step 3: Hold the CPU down firmly, and then lower the lever to locked
position to complete the installation.
Step 4: Put the CPU Fan and heatsink assembly on the CPU and buckle it
on the retention frame. Connect the CPU FAN power cable into
the JCFAN1. This completes the installation.
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2.2 FANHEADERS
These fan headers support cooling-fans built in the computer. The fan
cable and connector may be different according to the fan manufacturer.
Connect the fan cable to the connector while matching the black wire to
pin#1.
JCFAN1: CPU Fan Heade r
14
JC FAN1
JSFAN1: System Fan Header
JSFAN1
Pin
Pin
G31-M7
Assignment
1 Ground
2 Power
3 FAN RPM
rate sense
4 Smart Fan
Control
Assignment
1 Ground
2 +12V
3 FAN RPM
rate sense
13
Note:
The J CFAN1 su ppor t 4-pi n hea d co nn ector and J SFAN1 s uppor t 3-pin he ad c onnect or.
When co nnec ti ng wi t h wi r es o nto c on nect or s , pl e ase not e that t he re d wire is th e p ositi ve
and should be c onnec ted to pin #2, and t he blac k wir e is Gr ound an d should be
conn ecte d t o GND .
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Motherboard Manual
2.3 INSTALLING SYSTEM MEMORY
A. DD R2 module
DDR2_B1
DDR2_A1
1. Unlock a DIMM slot by pressing the retaining clips outward. Align a
DIMM on the slot such that the notch on the DIMM matches the
break on the Slot.
2. Insert the DIMM vertically and firmly into the slot until the retaining
chip snap back in place and the DIMM is properly seated.
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B. Memory Capacity
G31-M7
DIMM Socket
Location
DDR2_A1 256MB/512MB/1GB/2GB
DDR2_B1 256MB/512MB/1GB/2GB
DDR2 Module
To t a l M e m o r y
Size
Max is 4B.
C. D ual Ch ann el Memory In stalla tion
To trigger the Dual Channel function of the motherboard, the memory
module must meet the following requirements:
Install memory module of the same density in pairs, shown in the
following table.
Dual Channel Status
Disabled O X
Disabled X O
Enabled O O
DDR2_A1
DDR2_B1
(O means memory installed, X means memory not installed.)
The DRAM bus width of the memory module must be the same(x8 or
x16)
D. FSB Supporting Table
According to the FSB frequency of the installed CPU, the motherboard
could suppo rt DDR2 533/667/800 modules. Please refer to the table
below to find out the proper RAM module that fits the FSB of the
installed CPU.
FSB of CPU
FSB 533 FSB 800 FSB 1066 FSB1333
DDR2 Module
DDR2 533 O X O X
DDR2 667 O O O O
DDR2 800 O O O O
(O means supported, X means not supported.)
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Motherboard Manual
2.4 CONNECT ORS AND SLOTS
FDD1: Floppy Di sk C onnector
The motherboard prov ides a standard floppy disk connector that supports 360K,
720K, 1.2M, 1.44M and 2.88M floppy disk ty pes. This connector supports the
prov ided f loppy drive ribbon cables.
234
133
ID E1: Hard Disk Conne ctor
The motherboard has a 32-bit Enhanced PCI IDE Controller that prov ides PI O
Mode 0~4, Bus Master, and Ultra DMA 33/66/100 functionality.
The IDE connector can connect a master and a slave drive, so you can connect
up to two hard disk driv es.
IDE1
40
2
39
1
10
Page 13
PEX16_1: PCI-Express x16 Slot
- PCI-Ex press 1.0a compliant.
- Maximum theoretical realized bandwidth of 4GB/s simultaneously per
direction, f or an aggregate of 8GB/s totally.
PEX1_1: PCI-Express x1 Slot
- PCI-Ex press 1.0a compliant.
- Data transf er bandwidth up to 250MB/s per direct ion; 500MB/s in total.
- PCI-Ex press supports a raw bit-rate of 2.5Gb/s on the data pins.
- 2X bandwidth ov er the tradit ional PCI architecture.
This motherboard is equipped with 2 standard PCI slots. PCI stands f or
Peripheral Component Interconnect, and it is a bus standard for expansion
cards. This PCI slot is designated as 32 bits.
G31-M7
PCI1
PCI2
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Motherboard Manual
CHAPTER 3: HEADERS & JUM PERS SETUP
3.1 H
The illustration shows how to set up jumpers. When the jumper cap is
placed on pins, the jumper is “close”, if not, that means the jumper is
“open”.
OW T O SET U P JUMPERS
Pin opened Pin closed Pin1-2 closed
3.2 D
JPANEL1: Front Panel Header
ET AIL SET T I NG S
This 16-pin connector includes Power-on, Reset, HDD LED, Power LED, and
speaker connection. It allows user to connect the PC case’s front panel switch
functions.
PWR_LED
On/ Off
-
9
1
Pi n Assignment Func tio n P in Ass ignme nt Functio n
1 +5V 9 N/A
2 N/A 10 N/A
3 N/A 11 N/A N/A
4 Speaker
5 HDD LED (+) 13 P ower LED (+)
6 HDD LED (-)
7 Ground 15 Power button
8 Reset control
Speaker
Connector
Hard drive
LED
Reset button
++
-
+
SPK
12 Po we r LED (+)
14 Po we r LED (-)
16 Ground
RST
HLE D
16
8
N/A
Power LED
Power-on button
12
Page 15
J A TXP W R1 : A TX P o we r Sou rce C onne cto r
This connector allows user to connect 24-pin power connector on the ATX
power supply.
G31-M7
12
1
Pi n Assignment Pi n Ass ignme nt
24
13
13 +3.3V 1 + 3.3V
14 -12V 2 + 3.3V
15 Gr oun d 3 Gr oun d
16 PS_ON 4 + 5V
17 Gr oun d 5 Gr oun d
18 Gr oun d 6 + 5V
19 Gr oun d 7 Gr oun d
20 NC 8 PW_ OK
21 +5V 9 Stand b y Volt ag e+5V
22 +5V 10 +12V
23 +5V 11 +12V
24 Gr oun d 12 + 3.3V
J A TXP W R2 : A TX P o we r Sou rce C onne cto r
By connecting this connector, it will provide +12V to CPU power c ircuit.
Pin
1234
Assignment
1 +12V
2 +12V
3 Ground
4 Ground
Note:
Befor e p ow er o n the s yst em, pl eas e make sur e th at b oth J AT XP WR1 and JAT XP WR 2
conn ector s ha ve b ee n pl ug ged- i n.
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Motherboard Manual
JUSB3/JUSB4: Headers for USB 2.0 Ports at Front Panel
This motherboard provides 2 USB 2.0 headers, which allows user to connect
additional USB cable on the PC front panel, and also can be connected with
This header allows user to connect the front audio out put cable with the PC front
panel. This header allows only HD audio front panel connector; AC’97 connector
is not acceptable.
Pi n Assignment
1 Mic Left in
2 Ground
3 Mic Right in
4 GPIO
10
9
1
2
5 Right line in
6 Jack Sense
7 Front Sens e
8 Key
9 Left line in
10 Jack Sens e
JCDIN1: CD-ROM Audio-in Connector
This connector allows user to connect the audio source f rom the v ariaty dev ices,
like CD-ROM, DVD-ROM, PCI sound card, PCI TV turner card etc..
Pin
Assignment
1 Left Channel
Input
2 Ground
4
1
3 Ground
4 Right
Channel
Input
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Page 17
G31-M7
JCMOS1: Clear CMOS Header
By placing the jumper on pin2-3, it allows user to restore the BIOS saf e setting
and the CMOS data, please carefully f ollow the procedures to avoid damaging
the motherboard.
13
Pin 1-2 Close:
Normal Operation
(Default).
13
Pin 2-3 Close:
Clear CMOS data.
13
※ Clear CMOS Proce du res:
1. Remov e AC power line.
2. Set the jumper to “Pin 2-3 close”.
3. Wait f or f ive seconds.
4. Set the jumper to “Pin 1-2 close”.
5. Power on the AC.
6. Reset your desired password or clear the CMOS data.
SATA1~S ATA4: Se rial ATA Connectors
The motherboard has a PCI to SATA Controller with 4channels SATA interf ace, it
satisfies the SATA 2.0 spec and with transfer rate of 3Gb/s.
Pi n Assignment
1 Ground
2 TX +
SATA 4
SATA 3
SATA 2
SATA 1
3 TX -
4 Ground
5 RX-
6 RX+
7 Ground
147
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Motherboard Manual
JSPDIF_OUT1: Digital Audio out Connector
This connector allows user to connect the PCI bracket SPDIF output header.
13
J USB V1 /J USB V2: Po we r So ur ce Hea de rs fo r USB P o rts
Pin 1-2 Close:
JUSBV1: +5V for USB ports at JUSB2/JRJ45USB1.
JUSBV2: +5V for USB ports at front panel (JUSB3/JUSB4).
Pin 2-3 Close:
JUSBV1: +5V STB for USB ports at JUSB2/JRJ45USB1.
JUSBV2: +5V STB for USB ports at front panel (JUSB3/JUSB4).
Pin
Assignment
1 +5V
2 SPDIF_OUT
3 Ground
16
JUSBV1
3
1
JUSB V2
1
3
1
3
Pin 1-2 close
1
3
Pin 2-3 close
Page 19
JPRNT1: Printer Port Connector
This header allows you to connector printer on the PC.
2
G31-M7
1
25
Pin Assignment Pin As signment
1 -Strobe 14 Gr ound
2 -ALF 15 D ata 6
3 Data 0 16 Gr ound
4 -Error 17 Data 7
5 Data 1 18 Gr ound
6 -Init 19 - ACK
7 Data 2 20 Gr ound
8 -Sclti n 21 Bus y
9 Data 3 22 Gr ound
10 Groun d 23 PE
11 Data 4 24 Groun d
12 Groun d 25 SCLT
13 Data 5 26 Key
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Motherboard Manual
CHAPTER 4: USEFUL HELP
4.1 D
RIVER INST ALLAT ION NOT E
After you installed your operating system, please insert the Fully Setup
Driver CD into your optical drive and install the driver for better system
performance.
You will see the following window after you insert the CD
The setup guid e will auto detect you r motherboard and operating system .
Note:
If thi s win do w di dn’ t show up aft er yo u i ns er t th e Dri ver CD, pl ease use fil e br ows er to
locate and e xecute th e fi le SETU P.EXE un der your o pti cal dr i ve .
A. Driver Installation
To install the driver, please click on the Driver icon. The setup guide will
list the compatible driver for your motherboard and operating system.
Click on each device driver to launch the installation program.
B. S oftwa re In stal lation
To install the software, please click on the Software icon. The setup guide
will list the software available for your system, click on each software title
to launch the installation program.
C. Manual
Aside from the paperback manual, we also provide manual in the Driver
CD. Click on the Manual icon to browse for available manual.
Note:
You will need Acrobat Reader to open the manual file. Please download the latest version
of Acrobat Reader software from
1 No media present. (Insert diskette in floppy drive A:)
2
3 Insert next diskette if multiple diskettes are used f or recovery
4 Flash Programming successful
5 File read error
7 No Flash EPROM detected
10 Flash Erase error
11 Flash Program error
12 “AMIBOOT.ROM” f ile size error
13
POST BIOS Beep Codes
Number of Beeps Description
1 Memory refresh timer error
3 Base memory read/write test error
6 Key board controller BAT c ommand failed
7 General exception error (processor exception interrupt error
8 Display memory error (system video adapter)
“AMIBOOT.ROM” f ile not f ound in root directory of diskette i
A:
BIOS ROM image mismatch (file layout does not match
image present in flash device)
G31-M7
Troubleshooting POST BIOS Beep Codes
Number of Beeps Troubleshooting Action
1, 3 Reseat the memory, or replace with k nown good modules.
Fatal error indicating a serious problem with the system.
Consult y our system manufacturer. Bef ore declaring the
motherboard beyond all hope, eliminate the possibility of
interference by a malf unctioning add-in card. Remov e all
expansion cards except the video adapter.
z If beep codes are generated when all other expansion
6, 7
8
cards are absent, consult y our system manufacturer’s
technical support.
z If beep codes are not generated when all other expansion
cards are absent, one of the add-in cards is causing the
malfunction. Insert the cards back into the system one at
time until the problem happens again. This will rev eal the
malfunctioning card.
If the system video adapter is an add-in card, replace or
reseat the
video adapter. If the v ideo adapter is an integrated part of t h
system board, the board may be faulty.
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Motherboard Manual
4.3 EXT RA INFORMAT ION
CPU Overheated
If the system shutdown automatically after power on system for
seconds, that means the CPU protection function has been activated.
When the CPU is over heated, the motherboard will shutdown
automatically to avoid a damage of the CPU, and the system may not
power on again.
In this case, please double check:
1. The CPU cooler surface is placed evenly with the CPU surface.
2. CPU fan is rotated normally.
3. CPU fan speed is fulfilling with the CPU speed.
After confirmed, please follow steps below to relief the CPU protection
function.
1. Remove the power cord from power supply for seconds.
2 . Wa i t f o r se co nd s.
3. Plug in the power cord and boot up the system.
Or you can:
1. Clear the CMOS data.
(See “Close CMOS Header: JCMOS1” section)
2 . Wa i t f o r se co nd s.
3. Power on the syste m ag ai n.
20
Page 23
BIO-Flasher
BIO-Flasher is a BIOS flashing utility prov iding y ou an easy and simple way t o
update your BIOS via USB pen drive or f loppy disk.
The BIO-F las her is b uil t in th e BIO S c hip. To e nter the ut ili ty, press <F12> during the Power-On Self Tests (POST) procedure while booting up.
Updating BIOS with BIO-Flasher
1. Go to the website to download the latest BIOS file f or the mot herboard.
2. Then, sav e the BIOS f ile into a USB pen drive or a f loppy disk.
3. Insert the USB pen drive or the floppy disk that contains the BIOS file to the
USB port or the floppy disk drive.
4. Power on or reset the computer and then
press <F12> during the POST process.
A select dialog as the picture on the right
appears.
Select the device contains the BIOS file and
press <En ter> t o enter t he utility.
G31-M7
5. The utility will show the BIOS
f iles and their respective
inf ormat ion. Select the proper
BIOS file and press <Enter >
then <Y> to perf orm the BIOS
update process.
6. After the update process, the utility will ask y ou to reboot the system.
Press <Y> to proceed. BIOS update completes.
z This utility only allows st orage device with FAT32/16 format and single
partiti on.
z Shutting down or resetting the system while updating the BIOS will lead to
syst em bo ot fail ur e.
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Motherboard Manual
e
4.4 T
ROUBLESHOOT ING
1. No power to the system at all
Probable Solution
Power light don’t illuminate, f an
inside power supply does not turn
on.
2. Indicator light on key board does
not turn on.
System inoperativ e. Keyboard lights
are on, power indicator lights are lit,
and hard driv e is spinning.
System does not boot from hard disk
driv e, can be booted from optical driv e.
System only boots f rom optic al driv e.
Hard disk can be read and applications
can be used but booting from hard disk
is impossible.
Screen message says “Invalid
Configuration” or “CMOS Failure.”
Cannot boot system after installing
second hard drive.
1. Make sure power cable is
securely plugged in.
2. Replace cable.
3. Contact t echnical support.
Using even pressure on both ends of
the DIMM, press down firmly until the
module snaps into place.
1. Check cable running from disk to
disk controller board. Make sure
both ends are securely plugged
in ; c h ec k t he d r iv e ty pe i n t h e
standard CMOS setup.
2. Backing up the hard drive is
extremely important. All hard
disks are capable of breaking
down at any time.
1. Back up data and applications
files.
2. Ref ormat the hard drive.
Re-install applications and data
using backup disks.
Review system’s equipment. Make sur
correct inf ormat ion is in setup.
1. Set master/slave jumpers
correctly.
2. Run SETUP program and select
correct driv e types. Call the drive
manufacturers f or compatibility
with other drives.
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G31-M7
This page is intentionally left blank.
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Motherboard Manual
APPENDENCIES: SPEC IN OTHER LANGU AGE
GERMAN
S p e z i f ik a t io n e n
LGA 775
Intel Core2Duo / Core2Quad / Celeron 4xx
CPU
/ Pentium 4 / Pent ium D / Celeron D
Unterstützt Hyper-Threading / Execute Disable Bit /