HP ZBook 15u G5 Maintenance And Service Manual page 119

Items Procedures
a. Be sure that AC adapter has correct DC voltage.
b. Verify battery - test with a confirmed 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 configuration
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 verified working parts, one
component at a time. If system still does not boot, replace system board.
(11. Test with minimum configuration on page
Common issues and possible solutions 107
100)