No video (external)
Symptom
No image on external monitor
Possible causes
External monitor, resolution, display conguration, 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 get out power saving mode.
4. Adjust the brightness of the monitor.
5. Test with a veried 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. Congure display choice, and then force output to external video by closing the
notebook lid or pressing Fn + F4 to switch screen output.
DisplayPort/VGA
See No video (external) on page 116.
HDMI
Symptoms
●
Display issue
●
Sound issue
Possible causes
Cable, connection, settings.
Troubleshooting steps
Quick Check
1. Verify HDMI device input source is set correctly (i.e., HDMI1).
2. Be sure you are using the correct HDMI cable.
3. Check connection and reconnect the HDMI cable.
4. Verify if sound output is congured correctly in Control Panel > Sound Manager.
1. Perform hard reset (4. Update BIOS and drivers on page 81).
2. Update BIOS and drivers (4. Update BIOS and drivers on page 81) when sound is heard but
no video on HDTV.
References HP Notebook PCs - Troubleshooting HDMI Display and Sound Issues
116 Chapter 8 Troubleshooting guide
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