HP EliteDesk 705 35W G4 Desktop Mini PC User Manual

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Summary of Contents

Page 1 - Maintenance and Service Guide

Maintenance and Service GuideHP EliteDesk 705 G4 Desktop Mini

Page 2

Front panel componentsFront panel components1 USB Type-C 3.1 Gen 2 port with Fast Charging 5 Audio-out (headphone)/Audio-in (microphone) combo jack2 U

Page 3 - Safety warning notice

1. Shut down the operating system properly, then turn o the computer and any external devices, and disconnect the power cord from the power outlet.2.

Page 4

Clearing and resetting the BIOSThe CMOS button resets BIOS settings to default, but does not clear the passwords or aect any of the other Security se

Page 5 - Table of contents

9 Using HP PC Hardware DiagnosticsUsing HP PC Hardware Diagnostics WindowsHP PC Hardware Diagnostics Windows is a Windows-based utility that allows yo

Page 6

Downloading the latest HP PC Hardware Diagnostics Windows versionTo download HP PC Hardware Diagnostics Windows, follow these steps:1. Go to http://ww

Page 7

NOTE: If you need to stop a diagnostic test, press esc.Starting HP PC Hardware Diagnostics UEFITo start HP PC Hardware Diagnostics UEFI, follow these

Page 8

Using Remote HP PC Hardware Diagnostics UEFI settings (select products only)Remote HP PC Hardware Diagnostics UEFI is a rmware (BIOS) feature that do

Page 9 - 1 Product features

3. Make your customization selections.4. Select Main, and then Save Changes and Exit to save your settings.Your changes take eect when the computer r

Page 10 - Front panel components

A Power Cord Set RequirementsThe power supplies on some computers have external power switches. The voltage select switch feature on the computer perm

Page 11 - Serial number location

Country-Specic RequirementsAdditional requirements specic to a country are shown in parentheses and explained below.Country Accrediting Agency Cou

Page 12 - 2 Illustrated parts catalog

B Statement of memory volatilityThe purpose of this chapter is to provide general information regarding nonvolatile memory in HP Business computers. T

Page 13 - Computer major components 5

Rear panel componentsRear panel components1 Antenna cover 6 USB SuperSpeed ports (2)2 External antenna locations 7 Congurable option card slot

Page 14 - Miscellaneous parts

g. If a DriveLock password is set, select the Security menu, and scroll down to Hard Drive Utilities under the Utilities menu. Select Hard Drive Utili

Page 15 - Miscellaneous parts 7

Nonvolatile memory usageNonvolatile Memory Type Amount (Size)Does this memory store customer data?Does this memory retain data when power is removed?W

Page 16 - Generating static

Nonvolatile Memory Type Amount (Size)Does this memory store customer data?Does this memory retain data when power is removed?What is the purpose of th

Page 17 - Grounding the work area

Questions and answers1. How can the BIOS settings be restored (returned to factory settings)?IMPORTANT: Restore defaults does not securely erase any d

Page 18 - Operating guidelines

IMPORTANT: Resetting will result in the loss of information.These steps will not reset Custom Secure Boot Keys. See question and answer 7 for informat

Page 19 - Routine care

C Specications U.S. MetricDimensions Height 6.9 in 175 mmWidth 7.0 in 177 mmDepth 1.3 in 34 mmApproximate Weight 3.9 lb 1.77 kgTemperature Range

Page 20 - Service considerations

IndexAaccess panelillustrated 4locked 62removal 17administrator password 91audible codes 89audio problems 72Bbatterydisposal 13installation 29removal

Page 21 - Lithium coin cell battery

removal 32slots 32specications 32monitor problems 68mousecleaning 12problems 74Nnetwork problems 77nonvolatile memory 101numeric error codes 84Oopera

Page 22 - SATA hard drives

2 Illustrated parts catalogNOTE: HP continually improves and changes product parts. For complete and current information on supported parts for your c

Page 23 - Warnings and cautions

Item Description VGA option board Serial port option board USB Type-C option board(7) Solid-state drives, NVMe, M.2 2280, PCIe 1 TB, TLC 512-GB,

Page 24 - Front bezel dust lter

Item Description Intel Dual Band Wireless-AC 9560 802.11 AC 2x2 WiFi + Bluetooth 5.0 Combo Adapter (non-vPro)(13) RTC battery(14) Fan(15) Heat sink (

Page 25 - Access panel

DescriptionAdaptersUSB Type-C to USB 3.0DisplayPort to VGADisplayPort to DVIUSB to serial portKeyboardWashable, PVC, USB/PS2USBUSB, EssentialConferenc

Page 26 - Front bezel

3 Routine care, SATA drive guidelines, and disassembly preparationThis chapter provides general service information for the computer. Adherence to the

Page 27 - Hood sensor

Preventing electrostatic damage to equipmentMany electronic components are sensitive to ESD. Circuitry design and structure determine the degree of se

Page 28

Recommended materials and equipmentMaterials and equipment that are recommended for use in preventing static electricity include:●Antistatic tape●Anti

Page 29 - Hard drive

●Never cover the ventilation slots on the monitor with any type of material.●Install or enable power management functions of the operating system or o

Page 30 - Hard drive connector

© Copyright 2018 HP Development Company, L.P.AMD is a trademark of Advanced Micro Devices, Inc. Bluetooth is a trademark owned by its proprietor and u

Page 31 - Drive cage

●If you remove a key, use a specially designed key puller to prevent damage to the keys. This tool is available through many electronic supply outlets

Page 32

Hard DrivesHandle hard drives as delicate, precision components, avoiding all physical shock and vibration. This applies to failed drives as well as r

Page 33

SATA hard drivesSerial ATA Hard Drive CharacteristicsNumber of pins/conductors in data cable 7/7Number of pins in power cable 15Maximum data cable len

Page 34

4 Removal and replacement proceduresAdherence to the procedures and precautions described in this chapter is essential for proper service. After compl

Page 35 - WLAN module

Preparation for disassemblySee Routine care, SATA drive guidelines, and disassembly preparation on page 8 for initial safety procedures.1. Remove/dise

Page 36

Access panelTo access internal components, you must remove the access panel:1. Prepare the computer for disassembly (Preparation for disassembly on pa

Page 37

Front bezelNOTE: It is not necessary to remove the front bezel to access other components.The front bezel is secured to the top cover by tabs.1. Prepa

Page 38

Hood sensorThe hood sensor is located near the front of the computer.1. Prepare the computer for disassembly (Preparation for disassembly on page 16).

Page 39 - Expansion connector board

SpeakerA 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

Page 40 - Memory modules

Hard driveModels with a hard drive and drive cage do not include a separate graphics processor card.For a list of available hard drives, see Computer

Page 41

Safety warning noticeWARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not place the device directly on you

Page 42

Hard drive connectorThe hard drive connector is installed in the hard drive cage and connects to the system board.1. Prepare the computer for disassem

Page 43 - Memory modules 35

Drive cage1. Prepare the computer for disassembly (Preparation for disassembly on page 16).2. Remove the access panel (Access panel on page 17).3. Rem

Page 44

Graphics processor and heat sink assemblyIMPORTANT: Do not remove the heat sink/fan from the graphics processor. Remove the assembly as an entire unit

Page 45 - Heat sink

M.2 PCIe solid state drive (SSD)For a list of available solid-state drives, see Computer major components on page 4.1. Prepare the computer for disass

Page 46

6. Remove the screw (1) securing the SSD to the system board, and then pull the SSD from the socket on the system board (2).To replace the solid-state

Page 47 - Processor

WLAN moduleFor a list of available WLAN modules, see Computer major components on page 4.1. Prepare the computer for disassembly (Preparation for disa

Page 48 - System board

7. Remove the screw (2) that secures the WLAN module to the system board, and then grasp the WLAN module by the sides and pull it out of the socket (3

Page 49

BatteryThe battery that comes with the computer provides power to the real-time clock. When replacing the battery, use a battery equivalent to the bat

Page 50

5. Locate the battery and battery holder on the system board.NOTE: You may need to use a small tool, such as tweezers or needle-nose pliers, to remove

Page 51 - System board components

Expansion connector boardFor a list of available expansion connector boards, see Computer major components on page 4.An expansion board can be install

Page 53

Memory modulesThe computer comes with at least one small outline, dual in-line memory module (SODIMM). To achieve maximum memory support, you can popu

Page 54

Item Description System board label Slot color1 Memory module slot, Channel A DIMM3 Black2 Memory module slot, Channel B DIMM1 BlackThe system will au

Page 55

IMPORTANT: You must disconnect the power cord and wait approximately 30 seconds for the power to drain before adding or removing memory modules. Regar

Page 56

4. Locate the memory module locations (1) and (2) on the system board.5. To remove a memory module, press outward on the two latches on each side of t

Page 57 - Computer Setup–Main

Fan1. Prepare the computer for disassembly (Preparation for disassembly on page 16).2. Remove the access panel (Access panel on page 17).3. Disconnect

Page 58

Heat sinkCAUTION: The bond between the heat sink and the processor may be very tight. If the computer will power on, before removing the heat sink, tu

Page 59 - Computer Setup—Security

38 Chapter 4 Removal and replacement procedures

Page 60

ProcessorFor a list of available processors, see Computer major components on page 4.1. Prepare the computer for disassembly (Preparation for disassem

Page 61

System boardNOTE: All system board spare part kits include replacement thermal material.NOTE: System board appearance may vary.1. Prepare the computer

Page 62 - Computer Setup—Advanced

b. On models without a hard drive, disconnect the speaker cable from the system board (1), and then remove the ve Torx T15 screws (2) that secure the

Page 63

Table of contents1 Product features ...

Page 64

NOTE: When replacing the system board, you must change the chassis serial number in the BIOS.Updating SMBIOS InformationWhen replacing the system boar

Page 65

Setup Field Name Comment LabelFeature Byte Enter the Feature Byte string. The feature byte string is case sensitive.The label includes spaces after ev

Page 66 - Computer Setup—UEFI Drivers

Internal WLAN antenna cablesThe antennas route from the WLAN module to the cable connectors on the front and the rear of the computer.To install the a

Page 67 - Safety and comfort

15. 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 a

Page 68 - Helpful hints

Changing from desktop to tower congurationThe computer can be used in a tower orientation with an optional tower stand that can be purchased from HP.

Page 69 - Solving general problems

5 Computer Setup (F10) UtilityComputer Setup (F10) UtilitiesUse Computer Setup (F10) Utility to do the following:●Change settings from the defaults or

Page 70

4. 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 E

Page 71 - Solving general problems 63

Computer Setup–MainNOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.Table 5-1 Computer Setup—MainOpti

Page 72 - Solving power problems

Table 5-1 Computer Setup—Main (continued)Option Description●Hardware subsystem tests●Component tests●Show test logs●Language selectionUpdate System B

Page 73 - Solving hard drive problems

Table 5-1 Computer Setup—Main (continued)Option DescriptionApply Factory Defaults and ExitRestores the factory system conguration settings to the co

Page 74

Front bezel ...

Page 75

Table 5-2 Computer Setup—Security (continued)Option Description●Requires at least one lower case character●Allow spacesClear Password JumperSelect ‘H

Page 76 - Solving display problems

Table 5-2 Computer Setup—Security (continued)Option Description●Unprovision SPMPhysical Presence Interface. Noties the user upon system power up whe

Page 77 - Solving display problems 69

Table 5-2 Computer Setup—Security (continued)Option DescriptionRecover in the event of corruption - automatically recover with no prompting.System Ma

Page 78

Table 5-3 Computer Setup—Advanced (for advanced users) (continued)Option HeadingRecovery from Network Allows network recovery as the primary source.R

Page 79 - Solving display problems 71

Table 5-3 Computer Setup—Advanced (for advanced users) (continued)Option HeadingPCI Express Slot x (enable/disable)Lets you disable individual expans

Page 80 - Solving audio problems

Table 5-3 Computer Setup—Advanced (for advanced users) (continued)Option HeadingSelect to enable control of WLAN function based on wired network conn

Page 81 - Solving printer problems

Table 5-3 Computer Setup—Advanced (for advanced users) (continued)Option HeadingS3 (Stand By)= 3 blinks at 1Hz (50% duty cycle) followed by a pause o

Page 82

6 Troubleshooting without diagnosticsThis chapter provides information on how to identify and correct minor problems, such as USB devices, hard drive,

Page 83

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

Page 84

●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

Page 85 - Solving network problems

Solving printer problems ...

Page 86

Computer date and time display is incorrect.Cause SolutionRTC (real-time clock) battery may need to be replaced.NOTE: Connecting the computer to a liv

Page 87 - Solving memory problems

Poor performance.Cause SolutionHard drive fragmented. Defragment hard drive.Program previously accessed did not release reserved memory back to the sy

Page 88

System does not power on and the LEDs on the front of the computer are not ashing.Cause Solution1. If equipped with a voltage selector, check that th

Page 89

Computer powered o automatically and the Power LED ashes Red two times, once every second, followed by a two second pause, and the computer beeps tw

Page 90 - Solving software problems

Nonsystem disk/NTLDR missing message.Cause SolutionThe system is trying to start from the hard drive but the hard drive may have been damaged.▲ Perfor

Page 91 - Solving software problems 83

Solving media card reader problemsMedia card will not work in a digital camera after formatting it in Windows.Cause SolutionBy default, Windows will f

Page 92

After installing the media card reader and booting to Windows, the reader and the inserted cards are not recognized by the computer.Cause SolutionThe

Page 93

Blank screen (no video).Cause Solution2. Expand the Resolution box, and then use the sliding control to reset the resolution.Monitor is congured to u

Page 94

Dim characters.Cause SolutionThe brightness and contrast controls are not set properly. Adjust the monitor brightness and contrast controls.Cables are

Page 95

“Out of Range” displays on screen.Cause SolutionVideo resolution and refresh rate are set higher than what the monitor supports.Restart the computer a

Page 96

Appendix B Statement of memory volatility ... 101Non

Page 97

Solving audio problemsIf the computer has audio features and you encounter audio problems, see the common causes and solutions listed in the following

Page 98

Sound from headphones is not clear or mued.Cause SolutionHeadphones are plugged into the rear audio output connector. The rear audio output connector

Page 99 - Resetting the password jumper

Printer will not print.Cause Solutionwhere [printer port] is the address of the printer being used. If the printer works, reload the printer driver.To

Page 100

Keyboard commands and typing are not recognized by the computer.Cause SolutionKeyboard connector is not properly connected. Shut down the computer, re

Page 101

Solving hardware installation problemsYou may need to recongure the computer when you add or remove hardware, such as an additional drive or expansio

Page 102

Power LED ashes Red three times and then white two times.Cause SolutionMemory is installed incorrectly or is bad. CAUTION: To avoid damage to the DIM

Page 103

Network status link light never ashes.NOTE: The network status light is supposed to ash when there is network activity.Cause SolutionTo access Devic

Page 104

Network controller stops working without apparent cause.Cause SolutionThe cable is not securely connected. Ensure that the cable is securely attached

Page 105

System will not boot or does not function properly after installing additional memory modules.Cause SolutionA memory module is not installed in the DI

Page 106

Solving USB ash drive problemsIf you encounter USB ash drive problems, common causes and solutions are listed in the following table.USB ash drive

Page 107 - A Power Cord Set Requirements

1 Product featuresStandard conguration featuresFeatures may vary depending on the model. For support assistance and to learn more about the hardware

Page 108 - Country-Specic Requirements

Unable to connect to the Internet.Cause SolutionCable/DSL service is not available or has been interrupted due to bad weather.Try connecting to the In

Page 109

“Illegal Operation has Occurred” error message is displayed.Cause SolutionSoftware being used is not Microsoft-certied for your version of Windows.Ve

Page 110

7 POST error messages and diagnostic front panel LEDs and audible codesThis appendix lists the error codes, error messages, and the various indicator

Page 111 - Nonvolatile memory usage

Control panel message Description Recommended actionRTC (real-time clock) battery may need to be replaced.problem persists, replace the RTC battery. S

Page 112

Control panel message Description Recommended action00E-Inventory Error during MEBx Execution BIOS information passed to the MEBx resulted in a failur

Page 113 - Questions and answers

Control panel message Description Recommended action3. Back up contents and replace hard drive.302-Hard Disk 2: SMART Hard Drive Detects Imminent Fail

Page 114

Control panel message Description Recommended action3. Recongure card resources and/or run Computer Setup or Windows utilities.419-Out of Memory Spac

Page 115 - C Specications

Control panel message Description Recommended action90B-Fan Failure The system has detected that a cooling fan is not operating correctly.1. Reseat fa

Page 116

Number of long beeps/blinks Error category4 Thermal5 System boardPatterns of blink/beep codes are determined by using the following parameters:●1 seco

Page 117

8 Password security and resetting CMOSThis computer supports security password features, which can be established through the Computer Setup Utilities

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