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Table 7-30
Issues, possible causes, and fixes
Items
Symptom
No image on external monitor
DisplayPort/VGA
Use this information to troubleshoot DisplayPort and VGA issues.
See
No video (external) on page
HDMI
Use this information to troubleshoot HDMI issues.
Table 7-31
Issues, possible causes, and fixes
Items
Symptoms
●
Display issue
Sound issue
●
Procedures
Possible causes
External monitor, resolution, display configuration, drivers.
Troubleshooting steps
1.
Be sure external monitor is compatible with the computer.
2.
Be sure that external monitor is turned on.
3.
Press any key to exit the power-saving mode.
4.
Adjust the brightness of the monitor.
5.
Test with a verified working monitor.
6.
Test the monitor via internal ports (VGA, DP ports).
7.
Install latest video driver.
8.
Reset the screen resolution as described in the documentation.
9.
Configure display choice, and then force output to external video by closing the
notebook lid or pressing
110.
Procedures
Possible causes
Cable, connection, settings.
Troubleshooting steps
Quick Check
1.
Verify that the HDMI device input source is set correctly (for example, HDMI1).
2.
Be sure you are using the correct HDMI cable.
3.
Check connection and reconnect the HDMI cable.
4.
Verify whether sound output is configured correctly in Control Panel > Sound Manager.
1.
Perform hard reset
(4. Update BIOS and drivers on page
2.
Update BIOS and drivers
but do not see video on HDTV.
fn + f4
to switch screen output.
(4. Update BIOS and drivers on page
76).
76) when you hear sound
DisplayPort/VGA
111
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Troubleshooting
