HP ZBook 17 Maintenance and Service Guide - Page 137

No wake up, Items, Procedures, OS Power Management, Power Menu, Power Options, Tips and tricks

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No wake up Items Procedures Symptoms Possible causes When resuming from a power management state the computer may display: ● Blank screen ● Some light activity Power-saving mode; multiple-display setting. Troubleshooting steps 1. Verify that front power light (7. Status lights, blinking light codes, troubleshooting lights, and POST error messages on page 99) is blinking (indicating Sleep state). Press power button to exit Sleep. 2. Reset BIOS to default (associated with OS Power Management in Power Menu) (4. Update BIOS and drivers on page 94) 3. Verify power management settings in Windows Power Options. Disable Sleep options if the issue is resolved. Tips and tricks 4. Screen saver is set. Press any key or touch TouchPad to resume. 5. Verify that Display Choice is set to external video only. Toggle screen control key combination Fn + F4 or Windows logo +P. If you are using a docking station, set your notebook display as a primary display. When the computer is undocked, you may think it is in a power-saving state, but the screen image may actually display on an external display device in the docking configuration. Common issues and possible solutions 123

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No wake up
Items
Procedures
Symptoms
When resuming from a power
management state the computer may
display:
●
Blank screen
●
Some light activity
Possible causes
Power-saving mode; multiple-display setting.
Troubleshooting steps
1.
Verify that front power light (
7. Status lights, blinking light codes, troubleshooting
lights, and POST error messages
on page
99
) is blinking (indicating Sleep state). Press
power button to exit Sleep.
2.
Reset BIOS to default (associated with
OS Power Management
in
Power Menu
) (
4.
Update BIOS and drivers
on page
94
)
3.
Verify power management settings in Windows
Power Options
. Disable Sleep options if
the issue is resolved.
4.
Screen saver is set. Press any key or touch TouchPad to resume.
5.
Verify that Display Choice is set to external video only. Toggle screen control key
combination
Fn + F4
or
Windows logo
+
P
.
Tips and tricks
If you are using a docking station, set your notebook display as a primary display. When the
computer is undocked, you may think it is in a power-saving state, but the screen image may
actually display on an external display device in the docking
configuration.
Common issues and possible solutions
123