Consulting With Hp Service; Common Issues And Possible Solutions; Power-On Issues; No Power - HP ZBook 15u G5 Maintenance And Service Manual

10. Verify that the latest version of BIOS, drivers, and software are installed. A new release might support
new features or fix the problem.
11. Press the
keyboard is likely operating correctly.
12. Press the TouchPad On/Off button light. If the light toggles on or off, the TouchPad is likely operating
correctly.

Consulting with HP Service

If further HP support is required, a lot of the following information may be requested when you call, so it may
be helpful to take notes.
● Technical support registration number (if applicable)
● Product serial number
● Product model name and number
Product identification number
●
● Applicable error messages
● Add-on boards or hardware
● Third-party hardware or software
Operating system type and revision level
●

Common issues and possible solutions

This section contains common issues, symptoms, and a series of tables that describe possible solutions to
issues from
and solutions to resolve an issue.

Power-on issues

No Power

When a unit experiences no power there are several contributing factors to consider. Be sure to consider all
symptoms related to this behavior in troubleshooting.
Items
Symptoms
● Computer does not start
Display is black or blank
●
● No fan noise
● No hard drive spinning
● Lights do not glow
104 Chapter 8 Troubleshooting guide
caps lock and/or num lock
Failure classification on page 87
key. If the caps lock and/or
tables. The following sections identify the issue with symptoms
Procedures
Possible causes
Failed power input to the computer (external power source, AC adapter, faulty battery).
Bad connection to the computer (bad power button, power connector).
Defective parts (memory, hard drive, graphics) or failed system board.
Troubleshooting steps
Perform quick check
Remove all external devices, including docking station.
Verify external power source (2. Examine the environment on page
num lock light toggles on or off, the
89).