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Maintenance and Service Guide
HP ProDesk 400 G4 Desktop Mini

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Table of Contents

   Summary of Contents for HP ProDesk 400 G4

  • Page 1 Maintenance and Service Guide HP ProDesk 400 G4 Desktop Mini...
  • Page 2 HP Inc. under license. bound by the terms of the HP End User License Not all features are available in all editions of Intel, Celeron, and Pentium are trademarks of Agreement (EULA).
  • Page 3 Safety warning notice WARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not place the device directly on your lap or obstruct the device air vents. Use the device only on a hard, flat surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or clothing, to block airflow.
  • Page 4 Safety warning notice...
  • Page 5: Table Of Contents

    Table of contents 1 Product features ............................1 Standard configuration features ........................... 1 Front panel components ............................1 Rear panel components ............................2 Serial number location ............................2 2 Illustrated parts catalog ..........................3 Computer major components ..........................3 Miscellaneous parts ............................... 5 3 Routine care, SATA drive guidelines, and disassembly preparation ..............
  • Page 6 Front bezel ................................17 Hood sensor ................................. 18 Speaker ................................19 Hard drive ................................20 Hard drive connector ............................21 Drive cage ................................22 M.2 PCIe solid state drive (SSD) ........................... 23 WLAN module ..............................24 Battery ................................. 25 Expansion connector board ..........................27 Memory modules ..............................
  • Page 7 Using HP PC Hardware Diagnostics UEFI ......................90 Starting HP PC Hardware Diagnostics UEFI ..................91 Downloading HP PC Hardware Diagnostics UEFI to a USB flash drive ..........91 Downloading the latest HP PC Hardware Diagnostics UEFI version ......91 Downloading HP PC Hardware Diagnostics UEFI by product name or number (select products only) .....................
  • Page 8 Appendix B Statement of memory volatility ..................... 96 Nonvolatile memory usage ..........................98 Questions and answers ............................. 100 Using HP Sure Start (select models only) ......................101 Appendix C Specifications ..........................102 Index ................................103 viii...
  • Page 9: Product Features

    Product features Standard configuration features Features may vary depending on the model. For a complete listing of the hardware and software installed in the computer, run the diagnostic utility (included on some computer models only). NOTE: This computer model can be used in a tower orientation or a desktop orientation. The tower stand is sold separately.
  • Page 10: Rear Panel Components

    Rear panel components NOTE: Your computer model may look slightly different from the illustration in this section. Item Icon Component Item Icon Component Antenna cover Dual-Mode DisplayPort (2) Thumbscrew USB 3.1 Gen 1 ports (2) USB 3.1 Gen 1 port Optional port One of the following ports may be used: DisplayPort, HDMI, VGA, USB Type-C, or...
  • Page 11: Illustrated Parts Catalog

    Illustrated parts catalog NOTE: HP continually improves and changes product parts. For complete and current information on supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions. Computer major components Item...
  • Page 12 Item Description VGA option board Serial port option board USB Type-C option board Solid-state drives, NVMe, M.2 2280/2230, PCIe 512-GB, TLC 512-GB 512-GB, self-encrypting drive (SED), TLC 256-GB, TLC 256-GB, self-encrypting drive (SED), TLC 128-GB, TLC 128-GB Optane memory module (118 GB) Memory module (SODIMM, DDR4-2666) 16-GB 8-GB...
  • Page 13: Miscellaneous Parts

    System board (includes replacement thermal material) (18) Antenna cable, wireless (19) Stand Miscellaneous parts Description AC adapter 65 W, nPFC Sleeve Kits I/O sleeve Hard drive sleeve Optical drive sleeve VESA sleeve HP speaker phone security sleeve Quick release EPS bracket Miscellaneous parts...
  • Page 14 Description PC mounting bracket, B300 Antenna cover Port cover HP USB-Type C to USB Type-A Hub DisplayPort cable DVI monitor cable Adapters USB Type-C to USB 3.0 DisplayPort to VGA DisplayPort to HDMI 2.0 DisplayPort to DVI USB to serial port...
  • Page 15 Description USB, hardened Power cord Miscellaneous parts...
  • Page 16: Routine Care, Sata Drive Guidelines, And Disassembly Preparation

    Routine care, SATA drive guidelines, and disassembly preparation This chapter provides general service information for the computer. Adherence to the procedures and precautions described in this chapter is essential for proper service. CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system board.
  • Page 17: Preventing Electrostatic Damage To Equipment

    Preventing electrostatic damage to equipment Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of sensitivity. The following packaging and grounding precautions are necessary to prevent damage to electric components and accessories. ● To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes. ●...
  • Page 18: Recommended Materials And Equipment

    Recommended materials and equipment Materials and equipment that are recommended for use in preventing static electricity include: ● Antistatic tape ● Antistatic smocks, aprons, or sleeve protectors Conductive bins and other assembly or soldering aids ● ● Conductive foam ● Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance ●...
  • Page 19: Routine Care

    ● Never cover the ventilation slots on the monitor with any type of material. Install or enable power management functions of the operating system or other software, including ● sleep states. Routine care General cleaning safety precautions Never use solvents or flammable solutions to clean the computer. Never immerse any parts in water or cleaning solutions;...
  • Page 20: Cleaning The Monitor

    The screws used in the computer are not interchangeable. They may have standard or metric threads and may be of different lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations.
  • Page 21: Hard Drives

    Batteries, battery packs, and accumulators should not be disposed of together with the general household waste. In order to forward them to recycling or proper disposal, please use the public collection system or return them to HP, their authorized partners, or their agents. SATA hard drives...
  • Page 22: Removal And Replacement Procedures

    Not all features listed in this guide are available on all computers. NOTE: HP continually improves and changes product parts. For complete and current information on supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions. Warnings and cautions Before performing upgrades be sure to carefully read all of the applicable instructions, cautions, and warnings in this guide.
  • Page 23: Preparation For Disassembly

    Preparation for disassembly Routine care, SATA drive guidelines, and disassembly preparation on page 8 for initial safety procedures. Remove/disengage any security devices that prohibit opening the computer. Remove all removable media, such as a USB flash drive, from the computer. Turn off the computer properly through the operating system, then turn off any external devices.
  • Page 24: Access Panel

    Access panel To access internal components, you must remove the access panel: Prepare the computer for disassembly (Preparation for disassembly on page 15). Loosen the thumbscrew on the rear of the computer (1), and then slide the panel forward and lift it off the computer (2).
  • Page 25: Front Bezel

    Front bezel NOTE: It is not necessary to remove the front bezel to access other components. The front bezel is secured to the top cover by screws. Prepare the computer for disassembly (Preparation for disassembly on page 15). Remove the access panel (Access panel on page 16).
  • Page 26: Hood Sensor

    Hood sensor The hood sensor is located near the front of the computer. Prepare the computer for disassembly (Preparation for disassembly on page 15). Remove the access panel (Access panel on page 16). Lift the rubber cover from the hood sensor (1). Disconnect the cable from the system board, and then lift the hood sensor out of the computer (2).
  • Page 27: Speaker

    Speaker A single speaker is located on the left side of the computer behind the front bezel, inside the chassis. It is secured by a white peg that you pull out to release. To remove the speaker: Prepare the computer for disassembly (Preparation for disassembly on page 15).
  • Page 28: Hard Drive

    Hard drive For a list of available hard drives, see Computer major components on page NOTE: Before you remove the old hard drive, be sure to back up the data from the old hard drive so that you can transfer the data to the new hard drive. Prepare the computer for disassembly (Preparation for disassembly on page 15).
  • Page 29: Hard Drive Connector

    Hard drive connector The hard drive connector is installed in the hard drive cage and connects to the system board. Prepare the computer for disassembly (Preparation for disassembly on page 15). Remove the access panel (Access panel on page 16). Remove the hard drive (Hard drive on page 20).
  • Page 30: Drive Cage

    Drive cage Prepare the computer for disassembly (Preparation for disassembly on page 15). Remove the access panel (Access panel on page 16). Remove the hard drive (Hard drive on page 20). Lift the connector latch on the system board (1), and then disconnect the hard drive cable using the pull tab on the cable (2).
  • Page 31: Pcie Solid State Drive (ssd)

    M.2 PCIe solid state drive (SSD) For a list of available solid-state drives, see Computer major components on page Prepare the computer for disassembly (Preparation for disassembly on page 15). Remove the access panel (Access panel on page 16). In models with a hard drive, remove the hard drive (Hard drive on page 20) and drive cage Drive cage...
  • Page 32: Wlan Module

    WLAN module For a list of available WLAN modules, see Computer major components on page Prepare the computer for disassembly (Preparation for disassembly on page 15). Remove the access panel (Access panel on page 16). In models with a hard drive, remove the hard drive (Hard drive on page 20) and drive cage Drive cage...
  • Page 33: Battery

    The lithium battery is only used when the computer is NOT connected to AC power. HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For more information about recycling programs, go to http://www.hp.com/recycle.
  • Page 34 Lift the battery out of the holder. Slide the replacement battery into position, positive side up. The battery holder automatically secures the battery in the proper position. Reassemble the computer. Reset the date and time, your passwords, and any special system setups using Computer Setup. Chapter 4 Removal and replacement procedures...
  • Page 35: Expansion Connector Board

    Expansion connector board For a list of available expansion connector boards, see Computer major components on page An expansion board can be installed near the back of the system board that provides an additional connector on the rear I/O panel. The board is secured with two screws and connects to the a connector on the system board.
  • Page 36: Memory Modules

    The system does not operate properly if you install unsupported memory modules. Memory modules constructed with x8 and x16 DDR devices are supported; memory modules constructed with x4 SDRAM are not supported. HP offers upgrade memory for this computer and advises that the consumer purchase it to avoid compatibility issues with unsupported third-party memory.
  • Page 37 Item Description System Board Label Slot Color Memory module slot, Channel B DIMM1 Black Memory module slot, Channel A DIMM3 Black The system will automatically operate in single-channel mode, dual-channel mode, or flex mode, depending on how the memory modules are installed. ●...
  • Page 38 Tilt the fan up using the front tab and leave it in the up position. NOTE: It is not necessary to fully remove the fan to remove or install a memory module. Locate the memory module locations (1) and (2) on the system board. To remove a memory module, press outward on the two latches on each side of the memory module (1), and then pull the memory module (2) out of the slot.
  • Page 39: Fan

    Prepare the computer for disassembly (Preparation for disassembly on page 15). Remove the access panel (Access panel on page 16). Disconnect the fan cable from the system board (1). Remove the fan cable from the clips on the side of the heat sink (2). Lift fan up to about 30-45 degrees (3), and then pull it away from the heat sink (4).
  • Page 40: Heat Sink

    Heat sink CAUTION: The bond between the heat sink and the processor may be very tight. If the computer will power on, before removing the heat sink, turn on the computer until it warms the heat sink. Warming the fan sink lessens the bond between the heat sink and the processor, thereby making separating them easier.
  • Page 41 Heat sink...
  • Page 42: Processor

    After installing a new processor onto the system board, update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at: http://h18000.www1.hp.com/support/files. Chapter 4 Removal and replacement procedures...
  • Page 43: System Board

    System board NOTE: All system board spare part kits include replacement thermal material. NOTE: System board appearance may vary. Prepare the computer for disassembly (Preparation for disassembly on page 15). Remove the access panel (Access panel on page 16). In models with a hard drive, remove the hard drive (Hard drive on page 20) and drive cage Drive cage...
  • Page 44 On models without a hard drive, disconnect the speaker cable from the system board (1), and then remove the five Torx T15 screws (2) that secure the system board to the computer. Lift the front of the system board (1), and then pull it out of the computer (2). To install the system board, reverse the removal procedures.
  • Page 45 Updating SMBIOS Information When replacing the system board, you must reprogram the SMBIOS information on the affected computer. Failure to reprogram the board will result in eventual failure, such as an activation failure (need to reactivate the system) or a system recovery failure. To update SMBIOS information in Computer Setup: Turn on or restart the computer.
  • Page 46: System Board Components

    System board components Sys Bd Label Color Component Sys Bd Label Color Component CPUFAN White Processor fan SPKR White Speaker Black Processor WLAN Black WLAN module DIMM3 Black Secondary memory Black RTC battery DIMM1 Black Primary memory Black Solid-state module PSWD Black Password header and...
  • Page 47: Internal Wlan Antenna Cables

    Internal WLAN antenna cables The antennas route from the WLAN module to the cable connectors on the front and the rear of the computer. To install the antennas: Prepare the computer for disassembly (Preparation for disassembly on page 15). Remove the access panel (Access panel on page 16).
  • Page 48 Rotate and remove the antenna (3), and then pull the cable out of the front of the chassis (4). Reverse the removal procedure to install the WLAN antennas and cables. Chapter 4 Removal and replacement procedures...
  • Page 49: Changing From Desktop To Tower Configuration

    Changing from desktop to tower configuration The computer can be used in a tower orientation with an optional tower stand that can be purchased from HP. Prepare the computer for disassembly (Preparation for disassembly on page 15). Orient the computer so that its right side is facing up and place the computer in the optional stand.
  • Page 50: Computer Setup (f10) Utility

    Computer Setup (F10) Utility Computer Setup (F10) Utilities Use Computer Setup (F10) Utility to do the following: ● Change settings from the defaults or restore the settings to default values. View the system configuration, including settings for processor, graphics, memory, audio, storage, ●...
  • Page 51 Use the arrow (left and right) keys to select the appropriate heading. Use the arrow (up and down) keys to select the option you want, then press Enter. To return to the Computer Setup Utilities menu, press Esc. To apply and save changes, select Main > Save Changes and Exit. If you have made changes that you do not want applied, select Ignore Changes and Exit.
  • Page 52: Computer Setup-main

    Integrated MAC Address System Diagnostics If the hard drive has the HP Advanced Diagnostics installed, the application will launch. If HP Advanced Diagnostics is not installed, then a basic version built into the BIOS will provide the capability to perform the following functions: ●...
  • Page 53 Show test logs ● Language selection Update System BIOS Lets you update the system BIOS from www.hp.com or another network server, from a removable USB drive, or from a file located on the hard drive. Displays current BIOS version information. ●...
  • Page 54: Computer Setup-security

    Table 5-1 Computer Setup—Main (continued) Option Description Apply Factory Defaults Restores the factory system configuration settings to the computer after rebooting. Does not apply to and Exit options in the Security menu. Ignore Changes and Exit Exits Computer Setup without applying or saving any changes. Save Changes and Exit Saves changes to current system configuration, exits Computer Setup, and reboots.
  • Page 55 Only select Manual in situations in which forensic analysis is to be performed before HP Sure Start Recovery. When this policy is set to manual, HP Sure Start will not correct any issues that are found until the manual recovery key sequence is entered by the local user. This can result in a system that is unable to boot after inputting the manual recovery key sequence.
  • Page 56 Table 5-2 Computer Setup—Security (continued) Option Description ● Unprovision SPM Physical Presence Interface. Notifies the user upon system power up when changes are made to system security policy. The user must agree to the changes to confirm them. Default is enabled. Smart Cover ●...
  • Page 57: Computer Setup-advanced

    USB optical drive, or internal optical drive) are checked for a bootable operating system image. UEFI boot sources always have precedence over legacy boot sources. HP Sure Recover Provides the ability to automatically recover the operating system from a local recovery partition or from the network.
  • Page 58 Table 5-3 Computer Setup—Advanced (for advanced users) (continued) Option Heading Recovery from Network Allows network recovery as the primary source. Recover after Boot Allows the system to initiate recovery after failing to find a valid boot source. Failure Secure Boot Configure Legacy Support and Secure Boot Configuration Lets you turn off all legacy support on the computer, including booting to DOS, running legacy graphics...
  • Page 59 Table 5-3 Computer Setup—Advanced (for advanced users) (continued) Option Heading PCI Express Slot x (enable/disable) Lets you disable individual expansion slots. Default is enabled. M.2 SSD Lets you disable the M.2 solid-state drive slot. Default is enabled. Allow PCIe/PCI SERR# Interrupt (enable/disable) Allows PCI devices to report PCI/PCIe System Error signals, such as address parity errors, data parity errors, and critical errors other than parity.
  • Page 60 Table 5-3 Computer Setup—Advanced (for advanced users) (continued) Option Heading Port Options Lets you disable the following ports (default is enabled): Serial Port A (rear port optional component) SATA 0 Front USB ports - front USB port 1 is the USB Type-C port. Rear USB ports USB Legacy Port Charging - enables USB charging port capability when the system is in hibernate or shutdown state.
  • Page 61: Computer Setup-uefi Drivers

    Table 5-3 Computer Setup—Advanced (for advanced users) (continued) Option Heading S5 (Soft Off) = LED is off. Power On from Keyboard Ports (enable/disable) When enabled, this feature allows a key press to power on the system when it is off (S5 state). If using a USB keyboard, it must be plugged into one of the rear ports labeled with the keyboard icon.
  • Page 62: Troubleshooting Without Diagnostics

    To assist you in resolving problems online, HP Instant Support Professional Edition provides you with self- solve diagnostics. If you need to contact HP support, use HP Instant Support Professional Edition's online chat feature. Access HP Instant Support Professional Edition at: http://www.hp.com/go/ispe.
  • Page 63: Helpful Hints

    If it becomes necessary to call for technical assistance, be prepared to do the following to ensure that your service call is handled properly: ● Be in front of your computer when you call. ● Write down the computer serial number, product ID number, and monitor serial number before calling. ●...
  • Page 64: Solving General Problems

    If you have installed an operating system other than the factory-installed operating system, check to be ● sure that it is supported on the system. If the system has multiple video sources (embedded, PCI, or PCI-Express adapters) installed (embedded ● video on some models only) and a single monitor, the monitor must be plugged into the monitor connector on the source selected as the primary VGA adapter.
  • Page 65 In case of forgotten password, power loss, or computer malfunction, you must manually disable the Smart Cover lock . A key to unlock the Smart Cover Lock is not available from HP. Keys are typically available from a hardware store.
  • Page 66 Poor performance. Cause Solution Hard drive fragmented. Defragment hard drive. Program previously accessed did not release reserved memory Restart the computer. back to the system. Virus resident on the hard drive. Run virus protection program. Too many applications running. Close unnecessary applications to free up memory. Add more memory.
  • Page 67: Solving Power Problems

    System does not power on and the LEDs on the front of the computer are not flashing. Cause Solution If equipped with a voltage selector, check that the voltage selector (located on the rear of the power supply) is set to the appropriate voltage.
  • Page 68: Solving Hard Drive Problems

    Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. (Beeps stop after fifth iteration but LEDs continue flashing.) Computer powered off automatically and the Power LED flashes red four times and then white two times. Cause Solution The heat sink is not properly attached to the processor.
  • Page 69 Nonsystem disk/NTLDR missing message. Cause Solution The system is trying to start from the hard drive but the hard Perform Drive Protection System (DPS) testing in system ▲ drive may have been damaged. ROM. System files missing or not properly installed. Insert bootable media and restart the computer.
  • Page 70: Solving Media Card Reader Problems

    Solving media card reader problems Media card will not work in a digital camera after formatting it in Windows. Cause Solution By default, Windows will format any media card with a capacity Either format the media card in the digital camera or select FAT greater than 32MB with the FAT32 format.
  • Page 71: Solving Display Problems

    After installing the media card reader and booting to Windows, the reader and the inserted cards are not recognized by the computer. Cause Solution The operating system needs time to recognize the device if the Wait a few seconds so that the operating system can recognize reader was just installed into the computer and you are turning the reader and the available ports, and then recognize the media the PC on for the first time.
  • Page 72 Reseat DIMMs. Power on the system. Replace DIMMs one at a time to isolate the faulty module. Replace third-party memory with HP memory. Replace the system board. Blank screen and the power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times.
  • Page 73 Dim characters. Cause Solution The brightness and contrast controls are not set properly. Adjust the monitor brightness and contrast controls. Cables are not properly connected. Check that the graphics cable is securely connected to the graphics card (if applicable) or video connector and the monitor. Blurry video or requested resolution cannot be set.
  • Page 74 To download a SoftPaq that will assist you with the synchronization, go to the following Web site, select the appropriate monitor, and download either SP32347 or SP32202: http://www.hp.com/support Graphics card is not seated properly or is bad (some models). Reseat the graphics card. Replace the graphics card.
  • Page 75: Solving Audio Problems

    Solving audio problems If the computer has audio features and you encounter audio problems, see the common causes and solutions listed in the following table. Sound cuts in and out. Cause Solution Processor resources are being used by other open applications. Shut down all open processor-intensive applications.
  • Page 76: Solving Printer Problems

    Sound from headphones is not clear or muffled. Cause Solution Headphones are plugged into the rear audio output connector. Plug the headphones into the headphone connector on the front The rear audio output connector is for powered audio devices and of the computer.
  • Page 77: Solving Keyboard And Mouse Problems

    Printer will not print. Cause Solution where [printer port] is the address of the printer being used. If the printer works, reload the printer driver. To run MS-DOS commands, press the Windows key + r, type cmd in the Open box, and then click OK. If you are on a network, you may not have made the connection Make the proper network connections to the printer.
  • Page 78 Keyboard commands and typing are not recognized by the computer. Cause Solution Keyboard connector is not properly connected. Shut down the computer, reconnect the keyboard to the back of the computer, and then restart the computer. Program in use has stopped responding to commands. Shut down your computer using the mouse and then restart the computer.
  • Page 79: Solving Hardware Installation Problems

    Solving hardware installation problems You may need to reconfigure the computer when you add or remove hardware, such as an additional drive or expansion card. If you install a plug and play device, Windows automatically recognizes the device and configures the computer. If you install a non-plug and play device, you must reconfigure the computer after completing installation of the new hardware.
  • Page 80: Solving Network Problems

    DIMM1 or XMM1 must always be installed. DIMM1 must be installed before DIMM2, and DIMM3 must be installed before DIMM4 Replace third-party memory with HP memory. Replace the system board. Solving network problems Some common causes and solutions for network problems are listed in the following table. These guidelines do not discuss the process of debugging the network cabling.
  • Page 81 Network status link light never flashes. NOTE: The network status light is supposed to flash when there is network activity. Cause Solution To access Device Manager in Windows 10, type device manager in the taskbar search box, and then select Device Manager from the list of applications.
  • Page 82: Solving Memory Problems

    Management Engine (ME) settings). To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a memory module. For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the computer will not boot the operating system.
  • Page 83 LEDs continue flashing.) Cause Solution Memory is installed incorrectly or is bad. Reseat DIMMs. Power on the system. Replace DIMMs one at a time to isolate the faulty module. Replace third-party memory with HP memory. Replace the system board. Solving memory problems...
  • Page 84: Solving Usb Flash Drive Problems

    Solving USB flash drive problems If you encounter USB flash drive problems, common causes and solutions are listed in the following table. USB flash drive is not seen as a drive letter in Windows. Cause Solution The drive letter after the last physical drive is not available. Change the default drive letter for the flash drive in Windows.
  • Page 85: Solving Software Problems

    If you have installed an operating system other than the factory-installed operating system, check to be sure it is supported on the system. If you encounter software problems, see the applicable solutions listed in the following table. Computer will not continue and the HP logo does not display. Cause Solution ROM issue - POST error has occurred.
  • Page 86 “Illegal Operation has Occurred” error message is displayed. Cause Solution Software being used is not Microsoft-certified for your version of Verify that the software is certified by Microsoft for your version Windows. of Windows (see program packaging for this information). Configuration files are corrupt.
  • Page 87: Post Error Messages And Diagnostic Front Panel Leds And Audible Codes

    POST error messages and diagnostic front panel LEDs and audible codes This appendix lists the error codes, error messages, and the various indicator light and audible sequences that you may encounter during Power-On Self-Test (POST) or computer restart, the probable source of the problem, and steps you can take to resolve the error condition.
  • Page 88 Control panel message Description Recommended action RTC (real-time clock) battery may need to problem persists, replace the RTC battery. See be replaced. the Removal and Replacement section for instructions on installing a new battery. 008–Microcode Patch Error Processor is not supported by the BIOS. Upgrade BIOS to proper version.
  • Page 89 Run the Drive Protection erroneous error message.) System test under using F2 Diagnostics when booting the computer. Apply hard drive firmware patch if applicable. (Available at http://www.hp.com/support.) POST numeric codes and text messages...
  • Page 90 System test under using F2 Diagnostics when booting the computer. Apply hard drive firmware patch if applicable. (Available at http://www.hp.com/support.) Back up contents and replace hard drive. 309 – 30C: Hard Disk 3–6: SMART Hard Drive Hard drive is about to fail. (Some hard drives...
  • Page 91 Control panel message Description Recommended action Reconfigure card resources and/or run Computer Setup or Windows utilities. 419-Out of Memory Space for Option ROMs Recently added PCI expansion card contains an If a PCI expansion card was recently ▲ option ROM too large to download during POST. added, remove it to see if the problem remains.
  • Page 92: Interpreting System Validation Diagnostic Front Panel Leds And Audible Codes

    Control panel message Description Recommended action 90B-Fan Failure The system has detected that a cooling fan is Reseat fan. not operating correctly. Reseat fan cable. Replace fan. 90D-System Temperature Thermal shutdown occurred. The system BIOS Make sure system has proper airflow. has detected your machine was previously shut down to avoid overheating.
  • Page 93 Number of long beeps/blinks Error category Thermal System board Patterns of blink/beep codes are determined by using the following parameters: ● 1 second pause occurs after the last major blink. ● 2 second pause occurs after the last minor blink. ●...
  • Page 94: Password Security And Resetting Cmos

    If you lose or forget the password when in stringent security mode, the system can only be reset by System Management Command. This is a way for HP Service and Support to provide a secure method to access the BIOS and command a password reset for a specifically identified unit under the direction of the owner. This scenario may not be covered under warranty.
  • Page 95 Shut down the operating system properly, then turn off the computer and any external devices, and disconnect the power cord from the power outlet. With the power cord disconnected, press the power button again to drain the system of any residual power.
  • Page 96: Clearing And Resetting The Bios

    Clearing and resetting the BIOS The CMOS button resets BIOS settings to default, but does not clear the passwords or affect any of the other Security settings. On Intel systems with advanced manageability features, the CMOS button will also partially unprovision AMT.
  • Page 97: Using Hp Pc Hardware Diagnostics

    The tool runs within the Windows operating system in order to diagnose hardware failures. If HP PC Hardware Diagnostics Windows is not installed on your computer, first you must download and install it. To download HP PC Hardware Diagnostics Windows, see...
  • Page 98: Downloading The Latest Hp Pc Hardware Diagnostics Windows Version

    If your PC will not boot into Windows, you can use HP PC Hardware Diagnostics UEFI to diagnose hardware issues.
  • Page 99: Starting Hp Pc Hardware Diagnostics Uefi

    Downloading HP PC Hardware Diagnostics UEFI to a USB flash drive Downloading HP PC Hardware Diagnostics UEFI to a USB flash drive can be useful in the following situations: HP PC Hardware Diagnostics UEFI is not included in the preinstall image.
  • Page 100: Using Remote Hp Pc Hardware Diagnostics Uefi Settings (select Products Only)

    Find out more. Downloading Remote HP PC Hardware Diagnostics UEFI NOTE: HP Remote PC Hardware Diagnostics UEFI is also available as a Softpaq that can be downloaded to a server. Downloading the latest Remote HP PC Hardware Diagnostics UEFI version To download the latest Remote HP PC Hardware Diagnostics UEFI version, follow these steps: Go to http://www.hp.com/go/techcenter/pcdiags.
  • Page 101 Make your customization selections. Select Main, and then Save Changes and Exit to save your settings. Your changes take effect when the computer restarts. Using Remote HP PC Hardware Diagnostics UEFI settings (select products only)
  • Page 102: Appendix A Power Cord Set Requirements

    Power Cord Set Requirements The power supplies on some computers have external power switches. The voltage select switch feature on the computer permits it to operate from any line voltage between 100-120 or 220-240 volts AC. Power supplies on those computers that do not have external power switches are equipped with internal switches that sense the incoming voltage and automatically switch to the proper voltage.
  • Page 103: Country-specific Requirements

    Country-Specific Requirements Additional requirements specific to a country are shown in parentheses and explained below. Country Accrediting Agency Country Accrediting Agency Australia (1) EANSW Italy (1) Austria (1) Japan (3) METI Belgium (1) CEBC Norway (1) NEMKO Canada (2) Sweden (1) SEMKO Denmark (1) DEMKO...
  • Page 104: Appendix B Statement Of Memory Volatility

    Intel-based and AMD-based system boards contain nonvolatile memory subcomponents as originally shipped from HP, assuming that no subsequent modifications have been made to the system and assuming that no applications, features, or functionality have been added to or installed on the system.
  • Page 105 If a DriveLock password is set, select the Security menu, and scroll down to Hard Drive Utilities under the Utilities menu. Select Hard Drive Utilities, select DriveLock, then uncheck the checkbox for DriveLock password on restart. Select OK to proceed. Select the Main menu, and then select Reset BIOS Security to factory default.
  • Page 106: Nonvolatile Memory Usage

    HP Sure Start only) backup of The content is managed Embedded Controller. critical System solely by the HP Sure Start BIOS code, EC Embedded Controller. firmware, and critical computer configuration data for select...
  • Page 107 Fingerprint reader 512 KByte flash Stores Fingerprint reader memory is Only a digitally signed (select products fingerprint programmed by user application can make the only) templates. enrollment in HP call to write to the flash. ProtectTools Security Manager. Nonvolatile memory usage...
  • Page 108: Questions And Answers

    HP has provided options in Computer Setup (BIOS) to allow you to run in legacy BIOS, if required by the operating system. Examples of this requirement would be if you upgrade or downgrade the OS.
  • Page 109: Using Hp Sure Start (select Models Only)

    BIOS to its previously safe state, without user intervention. Those select computer models ship with HP Sure Start configured and enabled. HP Sure Start is configured and already enabled so that most users can use the HP Sure Start default configuration. The default configuration can be customized by advanced users.
  • Page 110: Appendix C Specifications

    Specifications U.S. Metric Dimensions Height 6.9 in 175 mm Width 7.0 in 177 mm Depth 1.3 in 34 mm Approximate Weight 3.9 lb 1.77 kg Temperature Range Operating 41° to 113°F 5° to 45°C Nonoperating -40° to 151°F -40° to 66°C Relative Humidity (noncondensing) Operating 5-90%...
  • Page 111: Index

    25 hood sensor messages 79 beep codes 84 removal and replacement 18 expansion connector board BIOS HP PC Hardware Diagnostics UEFI removal and replacement 27 clearing and resetting 88 downloading 91 booting options starting 91 Full Boot 79...
  • Page 112 29, 32, 34 RJ-45 (network) 2 USB Type-C SuperSpeed 1 hood sensor 18 USB Type-C SuperSpeed port with speaker 19 HP Sleep and Charge* 1 system board 35 keyboard VGA 2 WLAN antennas 39 cleaning 11 POST error messages 79...
  • Page 113 Torx T15 screwdriver 12 tower conversion 41 USB ports 2 USB SuperSpeed port 2 USB Type-C SuperSpeed port 1 USB Type-C SuperSpeed port with HP Sleep and Charge* 1 ventilation, proper 10 WLAN antennas removal and replacement 39 WLAN module...

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