HP ZBook 17 G5 User Manual

Items Procedures
1. Test essential hardware conguration (11. Test with minimum conguration
on page 116, 12. Test with veried working conguration (hardware and/or
operating system) on page 117, 13. Replace the system board on page 117) by
removing nonessential parts.
2. If there is still no boot, replace system board.
Tips and tricks Computer automatically boots without pressing power button when RTC 3V battery
has been removed. Therefore, after the service door and RTC 3V battery are removed,
no need to press power button from top side.
In essential hardware conguration, mWS G1 and G2 may require discrete GPU to boot.
However, mWS G3 can boot with integrated graphics.
Intermittent power-on, shutdown, reboot
Items Procedures
Symptoms
● Does not always turn on
● Intermittently hangs
● Intermittently shuts down
● Spontaneously reboots
Possible causes
Electrical short, uctuating power source, unstable power rails, loose connections, bent pins,
stray wires, dust, obvious damage, nearly faulty parts (bulging/leaking capacitor).
Potentially will turn into a no power issue soon (No Power on page 120).
Troubleshooting steps
1. Visually check power ports on both AC adapter and computer sides.
2. Inspect power sources:
a. Verify AC adapter working correctly. Use a conrmed working adapter to test.
b. Verify that battery is not depleted while system is in Sleep state. Test with a
conrmed working battery.
The sections below are intended for authorized service providers/technicians.
1. Follow actions in No Power on page 120.
a. Be sure that AC adapter has correct DC voltage.
b. Verify battery - test with a conrmed working battery.
c. Verify that power button is not stuck.
d. Verify that power connector is not loose.
e. Verify that Power Good LEDs are solid.
f. Remedy loose connections and reseat major components (processor, memory, GPU,
hard drive/solid-state drive, etc).
2. Perform visual check for loose connections, bent pins, stray wires, dust, nearly faulty parts
(bulging/leaking capacitor).
3. Test essential hardware conguration (11. Test with minimum conguration on page 116)
a. If system boots, reinstall nonessential hardware one component at a time to isolate
issue.
b. If system does not boot, replace essential hardware with veried working parts, one
component at a time. If system still does not boot, replace system board.
122 Chapter 7 Troubleshooting guide

HP ZBook 17 G5 Specifications

General

GPU	NVIDIA Quadro P5200
Display	17.3-inch, up to 4K UHD
Operating System	Windows 10 Pro
Ports	HDMI
Wireless	Bluetooth 5.0
CPU	Intel Core i7 or Xeon