HP EliteBook 850 G4 User Manual

7. Test with HP Support Assistant in Windows.
8. Diagnose with HP PC Hardware Diagnostics (UEFI) to isolate a hardware
issue from a software issue.
9. Examine Ethernet ports on the computer, docking station, and wall for
damage, dust, obstructions.
10. Update drivers: Verify that Ethernet module is displayed in Device
Manager and be sure that device driver is up to date. If updating drivers
does not help, try rolling back to previous drivers.
11. Reset BIOS to Default: If other devices can connect to network, but
computer cannot connect, a BIOS setting might be the cause of the
problem. Restore BIOS to default.
12. Test with veried working operating system or perform operating system
recovery to verify that the issue is not caused by customized settings.
13. Replace system board and verify that the issue is xed.
Network connectivity wireless (WLAN)
Symptoms
●
Unable to nd networks (yellow bang)
●
Connection dropouts
●
Slow performance
Possible causes
Network source, cable, connection, wireless module, driver, settings.
HP Support Assistant tool - No network detected in
HPSA
Wireless Adapter Properties - U-APSD support
Troubleshooting steps
1. Turn o the computer’s wired network (remove RJ-45 cable).
2. Examine environment for interference, such as cell phone or microwave,
that may emit high frequencies (above 1 GHz).
3. Verify wireless source by moving computer closer to the wireless base/
router.
4. Test with dierent wireless networks and check with your IT department for
hardware compatibility, settings.
5. Verify that the wireless light is on. If the light is amber, press the wireless
button to enable the wireless device.
6. Test with HP Support Assistant in Windows.
7. Diagnose with HP PC Hardware Diagnostics (UEFI) to isolate a hardware
issue from a software issue.
8. Update drivers: Verify that wireless module is displayed in Device Manager
and be sure that wireless drivers are up to date using www.hp.com or HP
Support Assistant. If updating drivers does not help, try rolling back to
previous drivers.
9. Reset BIOS to Default: If other devices can connect to your wireless
network, but your computer cannot connect, a BIOS setting might be the
cause of the problem. Restore BIOS to default.
10. Congure power management advanced settings as necessary.
In the example to the left, U-APSD support (Unscheduled Automatic Power
Save Delivery) is changed to Disabled to resolve an incompatible access
128 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