Asus a7n8x Motherboard DIY Troubleshooting Guide
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- Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 1
Motherboard A7N8X User Guide - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 2
Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing. ASUS PROVIDES THIS MANUAL "AS IS" WITHOUT WARRANTY - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 3
Unit (CPU 1-7 1.7 System memory 1-8 1.8 Expansion Slots 1-8 1.8.1 Configuring an expansion card 1-9 1.8.2 Standard Interrupt Assignments 1-9 1.8.3 AGP Slot 1-9 1.9 Jumpers 1-10 1.10 Connectors 1-13 Chapter 2 - BIOS Information 2-1 2.1 Managing and updating your BIOS 2-2 2.1.1 Using ASUS - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 4
12 2.4 Advanced Menu 2-13 2.4.1 Advanced BIOS Configuration 2-14 2.4.2 Advanced Chipset Features 2-15 2.4.3 Integrated Peripherals 2-18 2.4.4 Power Management Setup 2-20 2.4.5 PnP/PCI Configurations 2-22 2.5 Security Menu 2-23 2.5.1 Supervisor/User Set Password Table 2-23 2.5.2 User - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 5
with manufacturer's instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 6
are using, contact your local power company. • If the power supply is broken, do not try to fix it by yourself. Contact a qualified service technician or your retailer. Operation safety • Before installing the motherboard and adding devices on it, carefully read all the manuals that came with the - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 7
this guide To make sure that you perform certain tasks properly, take note of the following symbols used throughout this manual. WARNING updates. 1. ASUS Websites The ASUS websites worldwide provide updated information on ASUS hardware and software products. The ASUS websites are listed in the ASUS - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 8
886-2-2890-7121 (English) (Notebook) +886-2-2890-7122 (English) (Server/PC) +886-2-2890-7123 (English) (Networking) +886-2-2890-7902 (English) Support fax +886-2-2890-7698 ASUS COMPUTER INTERNATIONAL (America) Address 44370 Nobel Drive, Fremont, CA 94538, USA Fax +1-510-608-4555 E-mail - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 9
A7N8X specifications summary CPU Chipset Front Side Bus (FSB) Memory Expansion slots IDE Audio (optional) LAN (optional) Special Features Back Panel I/O Ports Internal I/O Connectors Socket A for AMD Duron™/Athlon™/Athlon™ XP 3000+ or higher 400*/333 MHz FSB Support (*PCB 2.0 or later versions) - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 10
A7N8X specifications summary BIOS features 2Mb Flash ROM, Award BIOS, TCAV, PnP, DMI2.0, DMI, Green Industry standard PCI 2.2, USB 1.1/2.0. Manageability DMI 2.0, WOL, WOR, Chassis Intrusion, SM Bus Support CD contents Device drivers ASUS PC Probe Anti-virus utility ASUS LiveUpdate Utility - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 11
Chapter 1 This chapter gives information about the ASUS A7N8X motherboard that came with the system.This chapter includes the motherboard layout, jumper settings, and connector locations. Motherboard Info ASUS A7N8X Motherboard 1-1 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 12
items. ASUS A7N8X motherboard ATX form factor: 12 in x 9.6 in ASUS A7N8X series support CD 40-pin 80-conductor ribbon cable for UltraDMA/66/100/133 IDE drives Ribbon cable for a 3.5-inch floppy drive Bag of extra jumper caps COM2 bracket I/O shield User's Manual ASUS Game port module ASUS 2-port USB - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 13
1.3 Motherboard components 12 3 45 19 18 17 16 15 14 13 20 21 29 28 27 ASUS A7N8X Motherboard 6 7 8 9 10 11 12 22 26 23 24 25 1-3 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 14
1 CPU Sockets. Socket 462 (Socket A) Zero Insertion Force (ZIF) socket for the AMD Duron™/Athlon™/Athlon XP™ 3000+ processors. 2 NorthBridge Controller. The NVIDIA® nForce2™ SPP (Ultra 400) North Bridge controller chipset. The controller supports a 64/128bit DDR memory controller and up to 3 GB of - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 15
the motherboard, this red LED lights up if you plug in any 3.3V AGP card into the AGP slot. When this LED is lit, there is no way you can turn on the system power. 18 LAN chip. The MCP integrated NVIDIA® MAC + Realtek 8201BL PHY Fast Ethernet controller allows connection to a Local Area Network (LAN - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 16
PCI 2 ® A7N8X PCI 3 nForce2 MCP Chipset CR2032 3V Lithium Cell CMOS Power CLRTC1 2Mb BIOS Super I/O USB56 COM2 MODEM1 PWR_LED1 PCI 4 PCI 5 USBPWR_56 ASUS ASIC with Hardware Monitor IR_CON1 PWRTMP1 IDELED1 GAME1 SMB1 CHASSIS1 BUZZ1 CTRL_PANEL1 1-6 Chapter 1: Motherboard Information - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 17
/or components. 1.6 Central Processing Unit (CPU) The motherboard provides a Socket A (462) for CPU installation. AMD processors offer gigahertz speeds to support all the latest computing platforms and applications. The A7N8X supports Athlon™ XP processors with "QuantiSpeed" data processing, large - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 18
& 3. 2. DIMMs with more than 8 devices on each side of the module are not supported. 3. Make sure the memory frequency and bus frequency setting in the BIOS are the same or set to [Auto] ensure system stability. 4. A DDR DIMM is keyed with a notch so that it fits in only one direction. DO NOT force - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 19
LAN 10* USB Universal Host Controller 11* Onboard VGA 12* PS/2 Compatible Mouse Port 13 Numeric Data Processor 14* Ultra ATA Controller 15* Secondary Ultra ATA Controller *These IRQs are usually available for ISA or PCI devices. IRQ assignments for this motherboard PCI slot 1 PCI slot - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 20
mode) using the connected USB devices. Set to +5VSB to wake up from S3 sleep mode (no power to CPU, DRAM in slow refresh, power supply in reduced power mode). Both jumpers are set to pins 1-2 (+5V) by default because not all computers have the appropriate power supply to support this feature. The - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 21
value is [Disabled]). This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS (see section 2.5.1 Power Up Control). KBPWR1 12 +5V (Default) 23 +5VSB ® A7N8X A7N8X Keyboard Power Setting ASUS A7N8X Motherboard 1-11 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 22
motherboard. 1. IDE connectors (40-1 pin PRI_IDE1, SEC_IDE1) This connector supports setting its jumper accordingly. Refer to the hard disk documentation for the jumper settings. BIOS supports specific use an 80-conductor IDE cable. ® A7N8X A7N8X IDE Connectors SEC_IDE1 PRI_IDE1 NOTE: Orient the - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 23
enable the keyboard power up function. Retain the default setting of [1-2] to disable computer keyboard-wake-up function. If you set to [2-3] +12.0VDC A7N8X ATX Power Connector If you will need to replace the power supply in the future, make sure that your new ATX 12V power supply can provide 8A - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 24
connectors. Connect a 2-port USB connector set to a USB header and mount the USB bracket to an open slot in the chassis. USB+5V USB_P6USB_P6+ GND NC USB+5V USB_P5USB_P5+ GND ® A7N8X A7N8X USB 2.0 Header USB56 1 5. GAME/MIDI connector (16-1 pin GAME1) This connector supports a GAME/MIDI module - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 25
"Ground" are shorted with a jumper cap. If you wish to use the chassis intrusion detection feature, remove the jumper cap from the pins. CHASSIS1 +5Volt (Power Supply Stand By) Chassis Signal Ground ® A7N8X 1 A7N8X Chassis Open Alarm Lead ASUS A7N8X Motherboard 1-15 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 26
if there is standby power and lights-OFF when the power is turned off. The red LED lights on when an incorrect AGP card is inserted. WARNING1 ® A7N8X A7N8X Onboard LED 1-16 ON Incorrect AGP Card OFF Correct AGP Card PWR_LED1 ON Standby Power OFF Powered Off Chapter 1: Motherboard Information - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 27
that allows digital instead of analog sound input and output. GND GND 1 SPDIF1 ® A7N8X SPDIF_IN +5V SPDIF_OUT A7N8X Digital Audio Connector When you input sound for S/PDIF IN, the LINE_OUT will output the sound. Mute LINE_OUT to impede sound output from S/PDIF IN. ASUS A7N8X Motherboard 1-17 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 28
that support this feature. You must also configure the UART2 Use As parameter in BIOS to set UART2 for use with IR. Use the ten pins as shown in Back View and connect a ribbon cable from the module to the motherboard SIR connector according to the pin definitions. IR_CON1 SIR CIR ® A7N8X A7N8X - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 29
connects a switch that controls the system power. Pressing the power switch turns the system between ON and SLEEP, or ON and SOFT OFF, depending on the BIOS or OS settings. Pressing the power switch while in the ON mode for more than 4 seconds turns the system OFF. ASUS A7N8X Motherboard 1-19 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 30
1-20 Chapter 1: Motherboard Information - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 31
Chapter 2 This chapter gives information about the ASUS A7N8X Basic Input/Output System (BIOS).This chapter includes updating the BIOS using the ASUS AFLASH BIOS that is bundled with the support CD. BIOS Information ASUS A7N8X Motherboard 2-1 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 32
BIOS file you saved to the boot disk, or try to clear the CMOS memory (see section 1.7, Jumpers). If the Flash Memory Writer utility is not able to successfully update a complete BIOS file, the system may not boot. If this happens, call the ASUS service center for support. 2-2 Chapter 2: BIOS - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 33
BIOS procedures Update the BIOS only if you have problems with the motherboard and you are sure that the new BIOS revision will solve your problems. Careless updating may create more problems ! The Binary Input/Output System (BIOS) can be updated using the built-in Flash Memory Writer utility - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 34
backsup the file. 7. AWDFLASH proceeds to check the new BIOS file and asks the user to program (flash) the new BIOS file to the motherboard. 8. Type and Press to flash the new Bios file. NOTE: Do not shut off system power or unplug the supply during the flash process. 2-4 Chapter - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 35
to restart. 2.1.2.2 Updating BIOS via Bootable Floppy Disk 1. Boot from the floppy BIOS. Select since it is advisable to back-up the original BIOS in case you need to reprogram it. 5. Follow steps 6 to 9 in "2.1.2.1 Updating BIOS via Built-in Award BIOS Flash Utility." ASUS A7N8X Motherboard - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 36
Setup program This motherboard supports a programmable FLASH ROM that you can update using the provided utility described in section "2.1 Managing and updating your BIOS." Use the BIOS Setup program when you are installing a motherboard, reconfiguring your system, or prompted to "Run Setup". This - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 37
including BIOS, Chipset, Peripheral, Power and PnP/ PCI configurations. SECURITY Use this menu to set the the various setup menus. The following table lists the keys found in the legend bar with their corresponding functions. Navigation Key(s) Left or Right ASUS A7N8X Motherboard 2-7 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 38
help In addition to the Item Specific Help window, the BIOS setup program also provides a General Help screen. You may launch this screen from any menu by simply pressing or the + combination. The General Help screen lists the legend keys and their corresponding functions. Saving - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 39
.] [1.44M, 3.5 in.] [2.88M, 3.5 in.] Halt On [All Errors] This field sets the system to halt on errors according to the system functions specified in each option. Configuration options: [All Errors] [No Errors] [All, But Keyboard] [All , But Diskette] [All, But Disk/Key] ASUS A7N8X Motherboard 2-9 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 40
of undetected HDDs, pressing enter will detect the HDD and then open is successful, the setup BIOS automatically fills in the manually. Before attempting to configure a hard disk drive, make sure you have the correct configuration information supplied by the drive manufacturer. Incorrect settings - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 41
write heads. Refer to the drive documentation to determine the correct value. To make changes to this field, set the IDE Primary Master field to [Manual] and the Access Mode to [CHS]. Precomp This field displays the precompressed volumes on the hard disk, if any, in MB. ASUS A7N8X Motherboard 2-11 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 42
Primary Master in order to enter the Hard Disk Drive values manually. Before attempting to configure a hard disk drive, make sure you have the correct configuration information supplied by the drive manufacturer. Incorrect settings may cause the system to fail to recognize the installed hard disk - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 43
These fields set chipset and CPU functions, including system and AGP caches, boot devices, memory settings, voltages and frequencies. Integrated Peripherals These fields set the functional properties of the IDE channels, Master/Slave PIOs, USB, IEEE 1394, audio, network and modem support, as well - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 44
drive. Configuration options: [Floppy] [LS120] [HDD] [SCSI] [CDROM] [ZIP100] [LAN] [Disabled] Second Boot Device [HDD] This field sets the priority of the second boot device; by default, the system boots up on the hard disk driver if the floppy drive is not present. Configuration options: [Floppy - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 45
or disables the 64MB onboard memory set for OS/2. Configuration options: [Disabled] [Enabled] 2.4.2 Advanced Chipset Features (Scroll down to view all items on the menu.) CPU External Frequency (MHz) [100MHz] This field sets the external frequency ratio of the CPU. The system normally autodetects - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 46
processors, this field sets the frequency multiple between the CPU's internal frequency (CPU speed) and the memory frequency. Memory Timing [Optimal] This field permits change of memory timing mode for system performance. When set to [User Defined], the next four fields can be set manually. Set - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 47
is set to [Manual], this field permits selection of specific CPU core voltages. This field is not accessible if the above CPU VCore Setting parameter is set to [Auto]. Configuration options: [1.100V] [1.125V] ... [1.825] [1.850V] Graphics Aperture Size [64M] This field sets the size of mapped memory - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 48
sets the voltage limits for the voltage supplied to the AGP controller. Note that increasing voltage to the AGP controller can cause premature failure of system components. Configuration options: [1.5V] [1.6V] [1.7V] AGP 8X Support .) Primary VGA BIOS [PCI VGA Card] This field sets the priority for - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 49
options: [Enabled] [Disabled] USB Legacy Mouse Support [Disabled] This field sets support for USB keyboards0. The USB keyboard is disabled by default. Enable this field to use a USB keyboard. Configuration options: [Enabled] [Disabled] Onboard AC97 Audio Controller [Auto] This field permits auto - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 50
This field sets the address This field sets the operation sets the parallel port DMA channel for the selected ECP mode. The default setting [201] This field sets the address of the sets the address of the MIDI I/O port to 330 by default. Configuration options: [Disabled] [330] [300] 2.4.4 Power - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 51
to reboot the system after power interruptions. [Disabled] leaves your system off while [Enabled] reboots the system. [Previous State] sets the system back to the state it was before the power interruption. Configuration options: [Disabled] [Enabled] [Previous State] ASUS A7N8X Motherboard 2-21 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 52
to use specific keys on the keyboard to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Any KEY] [Power Key] 2.4.5 PnP / PCI Configurations Resources Controlled By [Auto(ESCD)] This field sets control over - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 53
only Security Option Supervisor Password System None Setup None User Password A password is required for booting and entering into the CMOS setup and all items can be modified. A password is required to enter into the CMOS setup and all items can be modified. ASUS A7N8X Motherboard 2-23 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 54
>. The password is now set to [Enabled]. This password permits full access to the BIOS Setup menus. To clear set to [Disabled]. Forgot the password? If you forget a password, you can clear it by erasing the CMOS Real Time Clock (RTC) RAM. The RAM data containing the password information is powered - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 55
fan connectors on the motherboard, the specific field will show N/A. Q-Fan Control [Disabled] This field allows you to enable or disable the ASUS Q-Fan feature that smartly adjusts the fan speeds for more efficient system operation. When this field is set to [Enabled], set the appropriate Fan Speed - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 56
values are saved to the CMOS RAM. When selecting this option, a confirmation window appears. Select [Yes] to save changes and exit. The CMOS RAM is to fields other than system date, system time, and password, the BIOS asks for a confirmation before exiting. Load Setup Defaults This option allows you - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 57
Chapter 3 This chapter helps you power up your system and install drivers and utilities that came with the support CD. Starting Up ASUS A7N8X Motherboard 3-1 - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 58
3.1 Install an operating system The A7N8X motherboard supports Windows 98SE/ME/2000/XP operating systems (OS). Always install the latest OS version and corresponding updates so you can maximize the features of your hardware. Because motherboard settings and hardware options vary, use the setup - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 59
menus The menu lists the drivers and utilities that are available for this motherboard. Also, included is the contact information for technical support. Simply click on the specific tab of your choice. NVIDIA nForce Driver This item installs the NVIDIA nForce set of drivers. QFE Drivers Click this - Asus a7n8x | Motherboard DIY Troubleshooting Guide - Page 60
that can monitor Fan, Speed, Voltage, and CPU temperature. ASUS Update Installs utility to download and update motherboard BIOS & drivers. Microsoft DirectX Driver This item installs the Microsoft driver. Anti-virus Utility The anti-virus application scans, identifies, and removes computer viruses
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Motherboard
A7N8X
User Guide