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HP EliteBook 850 G4 User Manual

HP EliteBook 850 G4
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Speaker, headphone - audio issues
Symptoms
No sound from external or
internal speakers
Distorted sound, too soft, too
loud, intermittent
Possible causes
Volume turned down, sound card not recognized, malfunctioning hardware, electronic
interference.
Troubleshooting steps
1. Remove any device connected to the Audio jack to enable the internal speaker.
2. Close all open programs.
3. Adjust volume by pressing Fn + F6/F7. Be sure that volume button light is not amber
(mute).
- or -
Adjust Windows volume control by clicking the speaker icon on the Windows taskbar. Be
sure that the sound is not muted.
4. Verify that sound card is detected in Windows Device Manager.
5. Reinstall the latest audio driver.
6. Test audio device using HP PC Hardware Diagnostics (UEFI) tool (F2 > Component Tests
> Audio).
7. Test with a veried working operating system. If issue is resolved, restore full operating
system.
8. Test with veried working external speakers or headset.
9. Reseat internal speaker connections.
10. Test with veried working internal speakers.
11. Replace internal speakers.
No sound from headphones 1. Adjust volume by pressing Fn + F6/F7. Be sure that volume button light is not amber
(mute). Or adjust Windows volume control by clicking the speaker icon on the Windows
taskbar. Be sure that the sound it not muted.
2. Check headphone cable connection.
3. Test with a veried working audio board.
4. Replace audio board and verify the change.
No sound from external speakers 1. Verify that external speakers are turned on.
2. Disconnect headphones from headphone jack.
3. Adjust volume by pressing Fn + F6/F7. Be sure that volume button light is not amber
(mute).
- or -
Adjust Windows volume control by clicking the speaker icon on the Windows taskbar. Be
sure that the sound is not muted.
4. Check for possible interference devices nearby that may impact the audio (cell phone or
portable communications handset.)
132 Chapter 8 Troubleshooting guide

Table of Contents

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HP EliteBook 850 G4 Specifications

General IconGeneral
Form factorClamshell
Product typeLaptop
Product colorSilver
Country of originChina
Bus typeOPI
SteppingH0
Tjunction100 °C
Processor cache3 MB
Processor cores2
Processor modeli5-7200U
System bus rate4 GT/s
Processor familyIntel® Core™ i5
Processor socketBGA 1356
Processor threads4
Processor codenameKaby Lake
Configurable TDP-up25 W
Processor frequency2.5 GHz
Processor cache typeSmart Cache
Configurable TDP-down7.5 W
Processor lithography14 nm
Processor manufacturerIntel
PCI Express slots version3.0
Processor boost frequency3.1 GHz
Processor operating modes64-bit
ECC supported by processorNo
PCI Express configurations1x2+2x1, 1x4, 2x2, 4x1
Thermal Design Power (TDP)15 W
Configurable TDP-up frequency2.7 GHz
Configurable TDP-down frequency0.8 GHz
Maximum number of PCI Express lanes12
Numeric keypadYes
Pointing deviceTouchpad
Memory slots2x SO-DIMM
Internal memory8 GB
Memory clock speed2133 MHz
Internal memory typeDDR4-SDRAM
Maximum internal memory32 GB
Memory layout (slots x size)1 x 8 GB
SSD capacityThe Solid State Drive's storage capacity in Gigabytes.
SSD interfacePCI Express
Storage mediaSSD
Total storage capacity256 GB
Compatible memory cardsSD, SDHC, SDXC
Number of SSDs installed1
Display diagonal15.6 \
Native aspect ratio16:9
On-board graphics card ID0x5916
Discrete graphics card modelNot available
On-board graphics card modelIntel® HD Graphics 620
On-board graphics card familyIntel® HD Graphics
On-board graphics card OpenGL version4.4
On-board graphics card base frequency300 MHz
On-board graphics card DirectX version12.0
On-board graphics card dynamic frequency (max)1000 MHz
Battery capacity51 Wh
Battery life (max)14.7 h
Number of battery cells3
AC adapter power45 W
Wi-Fi standards802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth version4.2
Top Wi-Fi standardWi-Fi 5 (802.11ac)
Ethernet LAN data rates10, 100, 1000 Mbit/s
Charging port typeDC-in jack
USB 2.0 ports quantity0
Sustainability certificatesENERGY STAR
Processor codeSR2ZU
Processor ARK ID95443
Processor package size42 x 24 mm
Supported instruction setsAVX 2.0, SSE4.1, SSE4.2
Intel Identity Protection Technology version1.00
Intel Stable Image Platform Program (SIPP) version0.00
Intel segment taggingHome Office, Small Business
HP segmentBusiness
HP Management toolsHP 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 providedHP ePrint Driver+JetAdvantage, HP Hotkey Support, HP Noise Cancellation, HP Workwise, HP Velocity
Harmonized System (HS) code84713000
Weight and Dimensions IconWeight and Dimensions
Depth257.7 mm
Width383.6 mm
Height19.4 mm
Weight1840 g

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