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HP ProOne 400 23.8-inch G4 All-in-One Business PC User Manual

HP ProOne 400 23.8-inch G4 All-in-One Business PC
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Maintenance & Service Guide
HP ProOne 400 23.8-inch G4 All-in-One Business PC
HP ProOne 400 20-inch G4 All-in-One Business PC

Table of Contents

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HP ProOne 400 23.8-inch G4 All-in-One Business PC Specifications

General IconGeneral
Display Size23.8-inch
ProcessorIntel Core i5-8500T
RAM ExpandabilityUp to 32 GB
Storage256 GB SSD
Operating SystemWindows 10 Pro 64
RAM8 GB DDR4-2666
GraphicsIntel UHD Graphics 630
Portsheadphone/microphone combo
Audiostereo speakers
WirelessIntel Dual Band Wireless-AC 9560 802.11a/b/g/n/ac (2x2) Wi-Fi and Bluetooth 5

Summary

HP ProOne 400 23.8-inch components

HP ProOne 400 20-inch components

3 Routine care, SATA drive guidelines, and disassembly preparation

Electrostatic discharge information

Information on preventing damage from static electricity.

4 Removal and Replacement Procedures

Preparing for disassembly

Essential steps to follow before opening the computer for service.

Processor and System board removal

Step-by-step instructions for removing the processor and system board.

5 Computer Setup (F10) Utility

6 Using HP PC Hardware Diagnostics

HP PC Hardware Diagnostics Windows

Guide to using the Windows-based hardware diagnostic tool.

Using HP PC Hardware Diagnostics UEFI

Guide to using the UEFI-based hardware diagnostic tool.

7 Troubleshooting without diagnostics

Solving general and performance problems

Solutions for common issues like lock-ups, audio, performance, and power.

Solving hardware issues

Troubleshooting hard drives, printers, keyboards, mice, and installation problems.

Solving network and connectivity problems

Resolving network, USB, and Internet connectivity issues.

Solving memory and software problems

Resolving memory errors, software issues, and startup failures.

Troubleshooting startup failures and memory errors

Resolving startup issues, memory errors, and LED/beep codes.

Solving network problems

Resolving connectivity issues and network driver problems.

Solving memory problems

Resolving issues related to memory count, errors, or installation.

Troubleshooting memory installation and operational issues

Resolving boot failures, memory errors, and operational memory issues.

Solving Internet access problems

Resolving issues with connecting to the internet.

Troubleshooting internet connection and program launch issues

Resolving internet connectivity and automatic program launch problems.

Solving software problems

Resolving common software issues and error messages.

Troubleshooting startup failures and 'Illegal Operation' errors

Resolving startup issues and software error messages.

8 Backing up, restoring, and recovering

9 POST error messages and diagnostic front panel LEDs and audible codes

POST numeric codes and text messages

List and explanation of POST error codes and messages.

Interpreting diagnostic LEDs and audible codes

Guide to understanding system status indicators (LEDs and beeps).

10 Password security and resetting CMOS

Password security and jumper reset

Procedures for managing passwords and resetting system passwords via jumper.

Clearing and resetting the BIOS

Steps to clear and reset BIOS settings to factory defaults.

Appendix C Specifications

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