HP EliteBook 850 G4 User Manual

7. Be sure that the boot option is set to a working operating system drive.
8. Be sure that externally connected monitors are turned on and their power lights are on. Not all monitors
are equipped with lights to indicate their functionality.
9. Turn up the brightness and contrast controls of a display or external display device if the screen is dim.
During operation
1. To wake the computer:
a. Press the power button or any key on the keyboard.
b. If the system remains in the Sleep (Windows), Suspend (Linux), or Hibernate state, shut down the
system by pressing and holding the power button for at least four seconds.
c. If the system does not shut down, unplug the power cord, wait a few seconds, and then plug it in
again. Then press the power button again to restart the system. If it does not turn on, press the
power button to start the computer.
2. Look for blinking lights on the computer. The blinking lights could be error codes that will help diagnose
the problem.
3. Check all cables for loose or incorrect connections (external devices, power cords, dock, etc.).
4. After installing a non-Plug and Play expansion board or other option, recongure the computer. For
example, if you upgrade to a solid-state drive, you may need to recongure the boot order.
5. Be sure that all required device drivers have been installed. For example, if you have connected a printer,
you must install a printer driver.
6. If there is a network connection issue, plug another computer with a dierent cable into the network
connection. There might be a problem with the network plug or cable.
7. If hardware has recently been installed, remove it and determine whether the computer functions
properly.
8. If software has recently been installed, uninstall it and determine whether the computer functions
properly.
9.
If the screen is blank, conrm the display choice by pressing Windows logo + P and set to screen
only. Or plug an external monitor into a dierent video port on the computer if one is available and close
the computer lid.
10. Verify that the latest version of BIOS, drivers, and software are installed. A new release might support
new features or x the problem.
11. Press the caps lock and/or num lock key. If the caps lock and/or num lock light toggles on or o, the
keyboard is likely operating correctly.
12. Press the TouchPad On/O button light. If the light toggles on or o, the TouchPad is likely operating
correctly.
Consulting with HP Service
If further HP support is required, a lot of the following information may be requested when you call, so it may
be helpful to take notes.
●
Technical support registration number (if applicable)
●
Product serial number
100 Chapter 8 Troubleshooting guide

HP EliteBook 850 G4 Specifications

General

Form factor	Clamshell
Product type	Laptop
Product color	Silver
Country of origin	China
Bus type	OPI
Stepping	H0
Tjunction	100 °C
Processor cache	3 MB
Processor cores	2
Processor model	i5-7200U
System bus rate	4 GT/s
Processor family	Intel® Core™ i5
Processor socket	BGA 1356
Processor threads	4
Processor codename	Kaby Lake
Configurable TDP-up	25 W
Processor frequency	2.5 GHz
Processor cache type	Smart Cache
Configurable TDP-down	7.5 W
Processor lithography	14 nm
Processor manufacturer	Intel
PCI Express slots version	3.0
Processor boost frequency	3.1 GHz
Processor operating modes	64-bit
ECC supported by processor	No
PCI Express configurations	1x2+2x1, 1x4, 2x2, 4x1
Thermal Design Power (TDP)	15 W
Configurable TDP-up frequency	2.7 GHz
Configurable TDP-down frequency	0.8 GHz
Maximum number of PCI Express lanes	12
Numeric keypad	Yes
Pointing device	Touchpad
Memory slots	2x SO-DIMM
Internal memory	8 GB
Memory clock speed	2133 MHz
Internal memory type	DDR4-SDRAM
Maximum internal memory	32 GB
Memory layout (slots x size)	1 x 8 GB
SSD capacity	The Solid State Drive's storage capacity in Gigabytes.
SSD interface	PCI Express
Storage media	SSD
Total storage capacity	256 GB
Compatible memory cards	SD, SDHC, SDXC
Number of SSDs installed	1
Display diagonal	15.6 \
Native aspect ratio	16:9
On-board graphics card ID	0x5916
Discrete graphics card model	Not available
On-board graphics card model	Intel® HD Graphics 620
On-board graphics card family	Intel® HD Graphics
On-board graphics card OpenGL version	4.4
On-board graphics card base frequency	300 MHz
On-board graphics card DirectX version	12.0
On-board graphics card dynamic frequency (max)	1000 MHz
Battery capacity	51 Wh
Battery life (max)	14.7 h
Number of battery cells	3
AC adapter power	45 W
Wi-Fi standards	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth version	4.2
Top Wi-Fi standard	Wi-Fi 5 (802.11ac)
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Charging port type	DC-in jack
USB 2.0 ports quantity	0
Sustainability certificates	ENERGY STAR
Processor code	SR2ZU
Processor ARK ID	95443
Processor package size	42 x 24 mm
Supported instruction sets	AVX 2.0, SSE4.1, SSE4.2
Intel Identity Protection Technology version	1.00
Intel Stable Image Platform Program (SIPP) version	0.00
Intel segment tagging	Home Office, Small Business
HP segment	Business
HP Management tools	HP Driver Packs, HP SoftPaq Download Manager (SDM), HP System Software Manager (SSM), HP BIOS Config Utility (BCU), HP Client Catalog, HP Management Integration Kit, HP Device Access Manager, HP BIOSphere, HP Sure Start, HP Client Security
HP Software provided	HP ePrint Driver+JetAdvantage, HP Hotkey Support, HP Noise Cancellation, HP Workwise, HP Velocity
Harmonized System (HS) code	84713000

Weight and Dimensions

Depth	257.7 mm
Width	383.6 mm
Height	19.4 mm
Weight	1840 g

Summary

Illustrated Parts Catalog

Removal and Replacement Preliminary Requirements

Tools and Service Considerations

Lists necessary tools and outlines important considerations before disassembly and assembly.

Grounding Guidelines

Provides instructions on how to prevent electrostatic discharge damage.

Customer Self-Repair Procedures

Component Replacement Procedures Overview

Details steps for removing and replacing various user-serviceable computer components.

Bottom Cover Replacement

Details the steps for removing and replacing the computer's bottom cover.

Battery Replacement

Storage Drive Replacement (HDD/SSD)

Memory Module Replacement

Keyboard Replacement

Authorized Service Provider Procedures

Component Replacement Procedures Overview (Authorized)

Details steps for removing and replacing components accessible only by authorized providers.

Internal Base Plate Replacement

Heat Sink/Fan Assembly Replacement

System Board Replacement

Display Assembly Replacement

Top Cover Replacement

Interpreting Diagnostic LEDs and Audible Codes

Blinking Lights and Boot Error Codes

Troubleshooting Guide

General Troubleshooting Methodology

Provides a systematic approach to diagnosing and resolving computer issues.

Identifying and Analyzing Issues

HP Diagnostic Tools and Resources

Introduces HP diagnostic tools and other resources for hardware failure analysis.

Issue Resolution Steps

Provides methods for resolving identified computer issues, including resets and configuration changes.

Computer Setup (BIOS) and Configuration

Using Computer Setup (BIOS)

Updating the BIOS

Provides instructions on how to update the computer's BIOS.

Using HP PC Hardware Diagnostics (UEFI)

Download UEFI Diagnostics to USB

Explains how to download and create a bootable USB for HP PC Hardware Diagnostics.

Backup and Recovery Procedures

Creating Recovery Media and Backups

Restore and Recovery Options

Provides options for restoring, refreshing, and resetting the computer.

Recovering with HP Recovery Manager