Table 6-23 Issues, possible causes, and fixes
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 76) 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 73)
3. Check 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
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 appear on an external display device in the docking configuration.
Unresponsive
Use this information to troubleshoot issues with responsiveness.
102
Chapter 6 Troubleshooting guide
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