HP Z VR Backpack G1 - Intermittent Power-On, Shutdown, Reboot

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 47).
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 47.
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. 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 43)
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.
Common issues and possible solutions 49