Motherboard DIY Troubleshooting Guide
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... viii Conventions used in this guide ix Where to find more information ix ASUS contact information x Chapter 1: Product introduction 1-1 1.1 Welcome 1-1 1.2 Package contents 1-1 1.3 Overview 1-2 1.3.1 Identifying the motherboard components 1-2 1.3.2 Pre-installed accessory 1-5 1.4 Special features 1-6 Chapter 2: Hardware information 2-1 2.1 Motherboard installation 2-1 2.1.1 Placement direction 2-1 2.1.2 Screw holes 2-1 2.2 Motherboard layout 2-2 2.3 Before you proceed 2-3 2.4 Central Processing Unit (CPU 2-4 2.4.1 Overview 2-4 2.4.2 Installing the CPU...
... viii Conventions used in this guide ix Where to find more information ix ASUS contact information x Chapter 1: Product introduction 1-1 1.1 Welcome 1-1 1.2 Package contents 1-1 1.3 Overview 1-2 1.3.1 Identifying the motherboard components 1-2 1.3.2 Pre-installed accessory 1-5 1.4 Special features 1-6 Chapter 2: Hardware information 2-1 2.1 Motherboard installation 2-1 2.1.1 Placement direction 2-1 2.1.2 Screw holes 2-1 2.2 Motherboard layout 2-2 2.3 Before you proceed 2-3 2.4 Central Processing Unit (CPU 2-4 2.4.1 Overview 2-4 2.4.2 Installing the CPU...
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... hardware devices on it another standout in the world of system memory with the list below. 1.2 Package contents Check your retailer. The ASUS P4B-LX motherboard delivers a host of new features and latest technology making it , check the items in 478-pin package/Northwood Processor coupled with the Intel® 845 (...
... hardware devices on it another standout in the world of system memory with the list below. 1.2 Package contents Check your retailer. The ASUS P4B-LX motherboard delivers a host of new features and latest technology making it , check the items in 478-pin package/Northwood Processor coupled with the Intel® 845 (...
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... connects to sleep mode. ASUS P4B-LX motherboard user guide 1-3 This Low Pin Count (LPC) chipset combines the commonly used Super I /O chipset. The LED remains ON when the system goes to an ATX 12V power supply. The MCH provides the processor interface, system memory interface, AGP interface, and...with 400MHz system bus. 2 North bridge controller. 1 CPU socket. A 478-pin surface mount, Zero Insertion Force (ZIF) socket called the Intel Memory Controller Hub (MCH) is shut down or in soft-off mode. 8 IDE connectors. This socket accommodates the Intel® Pentium® 4 478...
... connects to sleep mode. ASUS P4B-LX motherboard user guide 1-3 This Low Pin Count (LPC) chipset combines the commonly used Super I /O chipset. The LED remains ON when the system goes to an ATX 12V power supply. The MCH provides the processor interface, system memory interface, AGP interface, and...with 400MHz system bus. 2 North bridge controller. 1 CPU socket. A 478-pin surface mount, Zero Insertion Force (ZIF) socket called the Intel Memory Controller Hub (MCH) is shut down or in soft-off mode. 8 IDE connectors. This socket accommodates the Intel® Pentium® 4 478...
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... 1394HEAD3 1394HEAD2 Mic In ATX12V Intel 845 Memory Controller Hub (MCH) Accelerated Graphics Port (AGP) Realtek RTL8100 AUX_CON Audio Codec CD_IN PCI1 P4B-LX PCI2 PCI3 CR2032 3V Lithium Cell CMOS Power LED1 01 23 1 1 1 Intel I/O Controller Hub (ICH2) CLR_CMOS 2Mbit Firmware Hub BUZZER USB23 PANEL Figure 2-2 Motherboard Layout The audio codec, external and...
... 1394HEAD3 1394HEAD2 Mic In ATX12V Intel 845 Memory Controller Hub (MCH) Accelerated Graphics Port (AGP) Realtek RTL8100 AUX_CON Audio Codec CD_IN PCI1 P4B-LX PCI2 PCI3 CR2032 3V Lithium Cell CMOS Power LED1 01 23 1 1 1 Intel I/O Controller Hub (ICH2) CLR_CMOS 2Mbit Firmware Hub BUZZER USB23 PANEL Figure 2-2 Motherboard Layout The audio codec, external and...
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2.5 System memory 2.5.1 Overview The motherboard comes with notches so that they fit in any of the following combinations. DO NOT force a DIMM into a socket to 2GB system memory using unbuffered ECC or non-ECC PC100/133 DIMMs. 88 Pins P4B-LX P4B-LX 168-Pin DIMM Sockets 60 Pins 20 Pins Figure 2-13... DIMM Sockets Location and SDR DIMMs DIMMs are keyed with two Single Data Rate (SDR) Dual Inline Memory Module (DIMM) sockets. These...
2.5 System memory 2.5.1 Overview The motherboard comes with notches so that they fit in any of the following combinations. DO NOT force a DIMM into a socket to 2GB system memory using unbuffered ECC or non-ECC PC100/133 DIMMs. 88 Pins P4B-LX P4B-LX 168-Pin DIMM Sockets 60 Pins 20 Pins Figure 2-13... DIMM Sockets Location and SDR DIMMs DIMMs are keyed with two Single Data Rate (SDR) Dual Inline Memory Module (DIMM) sockets. These...
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... on the screen. Be sure that is working Meaning No error during POST No DRAM installed or detected Video card not found or video card memory bad CPU overheated; Monitor b. While the tests are off. 3. ASUS P4B-LX motherboard user guide 3-1 3.1 Starting up or switch between orange and green after the system LED turns on.
... on the screen. Be sure that is working Meaning No error during POST No DRAM installed or detected Video card not found or video card memory bad CPU overheated; Monitor b. While the tests are off. 3. ASUS P4B-LX motherboard user guide 3-1 3.1 Starting up or switch between orange and green after the system LED turns on.
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...does not work in the DOS prompt within Windows and does not work with a Flash Memory Writer utility (AFLASH.EXE) to reinstall the BIOS later. Reboot the computer from the hard drive. ASUS P4B-LX motherboard user guide 4-1 DO NOT copy AUTOEXEC.BAT and CONFIG.SYS to run AFLASH. In...numbers represent a newer BIOS file. 1. If the word "unknown" appears after Flash Memory:, the memory chip is either not programmable or is your motherboard, check the last four numbers of the code displayed on the motherboard. This file works only in the boot sequence. 4. BIOS setup must specify "...
...does not work in the DOS prompt within Windows and does not work with a Flash Memory Writer utility (AFLASH.EXE) to reinstall the BIOS later. Reboot the computer from the hard drive. ASUS P4B-LX motherboard user guide 4-1 DO NOT copy AUTOEXEC.BAT and CONFIG.SYS to run AFLASH. In...numbers represent a newer BIOS file. 1. If the word "unknown" appears after Flash Memory:, the memory chip is either not programmable or is your motherboard, check the last four numbers of the code displayed on the motherboard. This file works only in the boot sequence. 4. BIOS setup must specify "...
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.... CPU/PCI Frequency (MHz) (when CPU Speed is locked, you cannot access this field depends on the CPU Frequency Multiple. CPU/Memory Frequency Ratio [Auto] This field determines whether the memory clock frequency is for unlocked processors only. The options that appear in synchronous or asynchronous mode with respect to the system... CPU frequency from the available options. 4.4 Advanced Menu CPU Speed [Manual] This parameter allows you to change the settings of this field. Configuration options: [Auto] [1:1] [3:4] ASUS P4B-LX motherboard user guide 4-15
.... CPU/PCI Frequency (MHz) (when CPU Speed is locked, you cannot access this field depends on the CPU Frequency Multiple. CPU/Memory Frequency Ratio [Auto] This field determines whether the memory clock frequency is for unlocked processors only. The options that appear in synchronous or asynchronous mode with respect to the system... CPU frequency from the available options. 4.4 Advanced Menu CPU Speed [Manual] This parameter allows you to change the settings of this field. Configuration options: [Auto] [1:1] [3:4] ASUS P4B-LX motherboard user guide 4-15
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... the system to [Enabled], BIOS reserves IRQ12, whether or not a PS/2 mouse is detected at startup. Configuration options: [Enabled] [Auto] USB Legacy Support [Auto] This motherboard supports Universal Serial Bus (USB) devices. When set this field to detect a PS/2 mouse at startup. Otherwise, IRQ12 can be used for expansion cards. If... cache. Otherwise, leave to the PS/2 mouse. When you set to turn on all processors during system bootup. Configuration options: [Disabled] [Enabled] [Auto] OS/2 Onboard Memory > 64M [Disabled] When using a USB device.
... the system to [Enabled], BIOS reserves IRQ12, whether or not a PS/2 mouse is detected at startup. Configuration options: [Enabled] [Auto] USB Legacy Support [Auto] This motherboard supports Universal Serial Bus (USB) devices. When set this field to detect a PS/2 mouse at startup. Otherwise, IRQ12 can be used for expansion cards. If... cache. Otherwise, leave to the PS/2 mouse. When you set to turn on all processors during system bootup. Configuration options: [Disabled] [Enabled] [Auto] OS/2 Onboard Memory > 64M [Disabled] When using a USB device.
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...SDRAM Configuration [By SPD] This parameter allows you to set the optimal timings for items 2-5, depending on the memory module stores critical information about the module, such as memory type, size, speed, voltage interface, and module banks. SDRAM RAS to [User Defined]. The default setting is... Delay parameter appears only when you set the SDRAM Configuration to [User Defined]. The EEPROM on the memory modules that you set the SDRAM Configuration to CAS Delay [3T] This item controls the latency between the SDRAM read /write command. ASUS P4B-LX motherboard user guide 4-17
...SDRAM Configuration [By SPD] This parameter allows you to set the optimal timings for items 2-5, depending on the memory module stores critical information about the module, such as memory type, size, speed, voltage interface, and module banks. SDRAM RAS to [User Defined]. The default setting is... Delay parameter appears only when you set the SDRAM Configuration to [User Defined]. The EEPROM on the memory modules that you set the SDRAM Configuration to CAS Delay [3T] This item controls the latency between the SDRAM read /write command. ASUS P4B-LX motherboard user guide 4-17
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...] [32MB] [64MB] [128MB] [256MB] AGP Capability [4X Mode] This motherboard supports the AGP 4X interface that memory space unavailable to 16MB. AGP 4X is a new cache technology for SDRAM parameters. It can only access memory up to other system components. Setting the address space to UC (uncacheable) if...Defined]. You must set the SDRAM Configuration to reserve an address space for AGP graphic data. Configuration options: [UC] [USWC] Memory Hole At 15M-16M [Disabled] This field allows you to [User Defined]. The SDRAM Active Precharge Delay parameter appears only when ...
...] [32MB] [64MB] [128MB] [256MB] AGP Capability [4X Mode] This motherboard supports the AGP 4X interface that memory space unavailable to 16MB. AGP 4X is a new cache technology for SDRAM parameters. It can only access memory up to other system components. Setting the address space to UC (uncacheable) if...Defined]. You must set the SDRAM Configuration to reserve an address space for AGP graphic data. Configuration options: [UC] [USWC] Memory Hole At 15M-16M [Disabled] This field allows you to [User Defined]. The SDRAM Active Precharge Delay parameter appears only when ...
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... 33MHz 66MHz 66MHz 66MHz Bandwidth 33MHz 66MHz 133MHz 266MHz Data Transfer Rate 133MByte/sec 266MByte/sec 512MByte/sec 1024MByte/sec Backup. ASUS P4B-LX motherboard user guide G-1 This glossary also includes some terms that are not found in this technology, peripherals are also able to activate...Configuration and Power Interface). AC '97 is for the purpose of a file, directory, or volume on a separate storage device from system memory. This enables the system to automatically turn on mainstream PCs. For example, inserting a tape into a VCR can turn ON and OFF peripherals...
... 33MHz 66MHz 66MHz 66MHz Bandwidth 33MHz 66MHz 133MHz 266MHz Data Transfer Rate 133MByte/sec 266MByte/sec 512MByte/sec 1024MByte/sec Backup. ASUS P4B-LX motherboard user guide G-1 This glossary also includes some terms that are not found in this technology, peripherals are also able to activate...Configuration and Power Interface). AC '97 is for the purpose of a file, directory, or volume on a separate storage device from system memory. This enables the system to automatically turn on mainstream PCs. For example, inserting a tape into a VCR can turn ON and OFF peripherals...
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...routine that organizes how a computer reads, writes, and communicate to it . IDE devices integrate the drive control circuitry directly on the motherboard. The primary application of the cable version is normally used for the OS. Flash ROM. Flash ROM is the integration of I/O ... flash ROM contents can be electrically erased. DRAM (Dynamic Random Access Memory). This device is a new standard to complement the slower USB interface and to -point cable-connected virtual bus. ASUS P4B-LX motherboard user guide G-3 DOS was the most popular PC operating system until the...
...routine that organizes how a computer reads, writes, and communicate to it . IDE devices integrate the drive control circuitry directly on the motherboard. The primary application of the cable version is normally used for the OS. Flash ROM. Flash ROM is the integration of I/O ... flash ROM contents can be electrically erased. DRAM (Dynamic Random Access Memory). This device is a new standard to complement the slower USB interface and to -point cable-connected virtual bus. ASUS P4B-LX motherboard user guide G-3 DOS was the most popular PC operating system until the...
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...the computer, it are synchronized with the CPU clock, eliminating the delay associated with data transfers between the CPU and memory. SIR (Serial IrDA). ASUS P4B-LX motherboard user guide G-5 The PCI Bus Master can perform data transfer without local CPU help and furthermore, the CPU can ...be used on IBM Micro Channel Architecture. Compared to the memory. SDRAM takes memory access away from the CPU control; PCI Bus (Peripheral...
...the computer, it are synchronized with the CPU clock, eliminating the delay associated with data transfers between the CPU and memory. SIR (Serial IrDA). ASUS P4B-LX motherboard user guide G-5 The PCI Bus Master can perform data transfer without local CPU help and furthermore, the CPU can ...be used on IBM Micro Channel Architecture. Compared to the memory. SDRAM takes memory access away from the CPU control; PCI Bus (Peripheral...
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... 4-19 SMART Monitoring 4-12 Starting up 3-1 Support CD 5-1 ASUS Update 5-3 DOS Utilities 5-6 Drivers menu 5-5 Main menu 5-2 Motherboard information 5-7 Readme file 5-8 Software menu 5-3 Technical Support Form 5-8... Welcome screen 5-1 Suspend Mode 4-25 System Controllers North Bridge 1-3 South Bridge 1-3 System Date 4-8 System memory configurations 2-10 System Time 4-8 U UART2 4-21 Ultra DMA Mode 4-12 USB Legacy Support 4-17 USB ports 1-5 USWC 4-18 V Video Memory 4-19 Z ZIF socket 2-4 ASUS P4B-LX motherboard...
... 4-19 SMART Monitoring 4-12 Starting up 3-1 Support CD 5-1 ASUS Update 5-3 DOS Utilities 5-6 Drivers menu 5-5 Main menu 5-2 Motherboard information 5-7 Readme file 5-8 Software menu 5-3 Technical Support Form 5-8... Welcome screen 5-1 Suspend Mode 4-25 System Controllers North Bridge 1-3 South Bridge 1-3 System Date 4-8 System memory configurations 2-10 System Time 4-8 U UART2 4-21 Ultra DMA Mode 4-12 USB Legacy Support 4-17 USB ports 1-5 USWC 4-18 V Video Memory 4-19 Z ZIF socket 2-4 ASUS P4B-LX motherboard...