Intel BLKDX79TO manual Port 80h Post Codes, Error Messages and Indicators

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Error Messages and Indicators

Port 80h POST Codes

During the POST, the BIOS generates diagnostic progress codes (POST codes) to I/O port 80h. If the POST fails, execution stops and the last POST code generated is left at port 80h and displayed on the Desktop Board’s seven-segment LED display shown in Figure 26. This code is useful for determining the point where an error occurred during the POST.

Figure 26. POST Code LED Display

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Contents Intel Desktop Board DX79TO Product Guide Disclaimer Revision HistoryDocument Organization PrefaceIntended Audience Use Only for Intended ApplicationsTerm Description TerminologyIntel Desktop Board DX79TO Product Guide Contents Error Messages and Indicators Regulatory Compliance ContentsTables Feature Summary Desktop Board FeaturesLAN Support Power ManagementPeripheral InterfacesSupported Operating Systems Desktop Board FeaturesIntel Desktop Board DX79TO Components Desktop Board ComponentsLabel Description Online Support ProcessorSystem Memory Memory Channel and Dimm Configuration Memory ConfigurationsUSB Intel X79 Express ChipsetUSB Support Serial ATALAN Subsystem Audio SubsystemLED Color LED State Indicates Legacy I/OExpandability Security Passwords Serial ATA and IDE Auto ConfigurationPCI and PCI Express* Auto Configuration Hardware Monitoring and Fan Speed Control Back to Bios ButtonHardware Management Hardware Support Power ManagementChassis Intrusion Software SupportFan Headers +5 V Standby Power Indicator Wake from USB Onboard System Control SwitchesReset Switch Power SwitchLocation of the Initialization/Status LEDs System Initialization/ Status LEDsActivity Color Description System Initialization LEDsSystem Initialization LEDs Item/CalloutStatus LEDs Trusted Platform Module TPMSpeaker Status LEDsReal-Time Clock BatteryBefore You Begin Installing and Replacing Desktop Board ComponentsObserve Safety and Regulatory Requirements Installation PrecautionsPrevent Power Supply Overload Installing and Replacing Desktop Board Components Installing the I/O ShieldIntel Desktop Board DX79TO Mounting Screw Hole Locations Installing the Desktop BoardUnlatch the Socket Levers Installing a ProcessorOpen the Load Plate Install the Processor Close the Load Plate Installing a Processor Fan Heat Sink Installing DIMMs Installing and Removing MemoryInstalling a Dimm Removing DIMMs Installing and Removing PCI Express x16 Add-in CardsInstalling PCI Express x16 Graphics Cards Removing a PCI Express x16 Add-in Card Installing a PCI Express x16 CardRemoving a PCI Express x16 Card Installing Linked PCI Express x16 Graphics CardsInstalling Linked PCI Express Graphics Cards Connecting the Serial ATA Cables Connecting Sata CablesInternal Headers Connecting to the Internal Headers and ConnectorsIeee 1394a Header Front Panel Audio HeaderChassis Intrusion Header Consumer IR CIR Headers Front Panel CIR Receiver Input Header Signal NamesBack Panel CIR Header Emitter Output Header Signal Names Pin Signal Name GroundFront Panel Header USB 2.0 Header Signal NamesFront Panel Header Signal Names USB 2.0 HeadersPin Description In/Out Connecting to the Audio SystemAlternate Front Panel Power LED Header Alternate Front Panel Power LED Header Signal NamesConnecting Chassis Fan Cables Connecting Chassis Fan and Power Supply CablesConnecting Power Supply Cables Connecting Power Supply CablesLocation of the Bios Configuration Jumper Block Setting the Bios Configuration JumperMode Description Clearing PasswordsJumper Settings for the Bios Setup Program Modes Précaution Replacing the BatteryVaro Προσοχή Внимание Intel Desktop Board DX79TO Product Guide Removing the Battery Intel Desktop Board DX79TO Product Guide Updating the Bios with the Intel Express Bios Update Utility Updating the BiosUpdating the Bios with the Intel Flash Memory Update Utility Updating the Bios Using the F7 Function KeyUpdating the Bios Recovering the BiosIntel Desktop Board DX79TO Product Guide Creating Your RAID Set Configuring for RAID Using Intel Rapid Storage TechnologyConfiguring the Bios Go to Configuration Sata Drives Setting Up a RAID Ready System Front-panel Power LED Blink Codes Error Messages and IndicatorsBios Error Codes Bios Beep CodesError Message Explanation Bios Error MessagesBios Error Messages Port 80h Post Codes Error Messages and IndicatorsMEC Memory Detection PEI Phase Before MRCPort 80h Post Codes Post Code Description Acpi S StatesCPU Initialization PEI, DXE, SMM PEIMs/RecoveryBoot Device Selection BDS Runtime Phase/EFI Operating System BootIntel Desktop Board DX79TO Product Guide Regulatory Compliance Safety StandardsBattery Caution Safety StandardsEuropean Union Declaration of Conformity Statement Regulatory Compliance Product Ecology StatementsRecycling Considerations Malay DeutschEspañol FrançaisTürkçe PortugueseRussian China RoHS EMC Regulations EMC RegulationsFCC Declaration of Conformity Japan Vcci Statement Canadian Department of Communications Compliance StatementEnsure Electromagnetic Compatibility EMC Compliance Korea Class B StatementDescription Mark Product CertificationsBoard-Level Certifications Regulatory Compliance MarksUnited States Energy STAR*, e-Standby, and ErP ComplianceChassis- and Component-Level Certifications EuropeIntel Desktop Board DX79TO Product Guide