HP ZBook 15u G5 User Manual

Identify the issue
1. Understand the issue
It is important to understand the issue that occurred, including related symptoms. It helps to understand the
basic computer boot-up sequence as well as the failure itself. The boot-up sequence and associated failures
are described below.
Boot up sequence
The computer performs several steps after you press the power button or restart the computer.
It is important to understand where in the boot-up sequence the symptoms occur. The following table lists
the phases of the boot-up sequence and explains the symptoms that may occur in each phase. For example, a
blue screen error (BSOD) often occurs during the performance phase.
Table 8-2 Boot-up sequence
Item Procedure
Power-on After power button is pressed, the computer boots after all internal power rails (i.e., 5V, 3.3V) are stable.
Conrm that power lights are on fan is spinning.
Next step: If the computer experiences a power-on issue, see “Verify Power Good (Troubleshooting) lights” in
No Power on page 104.
Common issues: all lights are o; troubleshooting lights are on; does not boot; video is absent.
POST (UEFI/BIOS) Power-On Self-Test (POST) veries that hardware components (processor, hard drive, memory, etc.) are
functional. When POST is complete, the HP logo displays briey and then disappears.
If there are errors, the computer may exhibit blinking lights and POST error messages
Common issues: lights blink, error message appears, hangs.
Performance
(operating system)
System boots to operating system, and Windows logo screen appears..
Common issues: hangs (lock up/freezes), blue screen, video distorted, driver conict, slow performance,
display issue (dead pixel), I/O issue (no speaker sound), wireless/audio unavailable, noise.
See Analyze the issue on page 90 table below for detailed troubleshooting information).
Failure classication
Failure classication is a breakdown of dierent types of failures and symptoms that could occur during the
boot-up sequence. Table 3 and table 4 represent the failure classication for common notebook failures.
Table 3 categorizes failures by the boot-up sequence.
1. Power-on: Common issues are No Power, Recycle/Reboot, etc.
2. POST: Common issues are No Boot (have power), Light Flash or Diagnostics Error.
3. Performance: Common issues are Intermittent Loss of Power, Blue Screen, Hang, etc. In many cases,
issues may be identied and associated with a particular hardware (i.e., display, storage).
Table 4 categorizes failures by hardware.
4. Display
5. I/O devices (Input/Output)
General troubleshooting steps 87

HP ZBook 15u G5 Specifications

General

Form factor	Clamshell
Product type	Mobile workstation
Product color	Gray
Country of origin	China
Panel type	UWVA
Touchscreen	-
LED backlight	Yes
Display diagonal	15.6 \
Native aspect ratio	16:9
Memory slots	2x SO-DIMM
Memory clock speed	2400 MHz
Memory form factor	SO-DIMM
Internal memory type	DDR4-SDRAM
Maximum internal memory	32 GB
SSD capacity	The Solid State Drive's storage capacity in Gigabytes.
Storage media	SSD
Total storage capacity	512 GB
Compatible memory cards	SD, SDHC, SDXC
Number of SSDs installed	1
Number of built-in speakers	2
HP segment	Business
HP speaker type	HP Dual Speakers
Front camera HD type	HD
HDMI version	1.4
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity	0
Wi-Fi standards	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Top Wi-Fi standard	Wi-Fi 5 (802.11ac)
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Pointing device	Touchpad
AC adapter power	- W
On-board graphics card ID	0x5917
On-board graphics card model	Intel® UHD Graphics 620
On-board graphics card family	Intel® UHD 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)	1150 MHz
Battery capacity	56 Wh
Number of battery cells	3
Bus type	OPI
Stepping	Y0
Tjunction	100 °C
Processor cache	8 MB
Processor cores	4
System bus rate	4 GT/s
Processor family	Intel® Core™ i7
Processor socket	BGA 1356
Processor threads	8
Processor codename	Kaby Lake R
Configurable TDP-up	25 W
Processor frequency	1.9 GHz
Configurable TDP-down	10 W
Processor lithography	14 nm
Processor manufacturer	Intel
PCI Express slots version	3.0
Processor boost frequency	4.2 GHz
Processor operating modes	64-bit
PCI Express configurations	1x2+2x1, 1x4, 2x2, 4x1
Thermal Design Power (TDP)	15 W
Configurable TDP-up frequency	2.1 GHz
Configurable TDP-down frequency	0.8 GHz
Maximum number of PCI Express lanes	12
Processor code	SR3L8
Processor ARK ID	124968
Processor package size	42 x 24 mm
Supported instruction sets	AVX 2.0, SSE4.1, SSE4.2
Intel Identity Protection Technology version	1.00

Weight and Dimensions

Depth	251 mm
Width	370.8 mm
Height	18.6 mm
Weight	1770 g