Windows 10: How do I get my HP external monitor to display again and get rid of a ghost monitor?

I have an HP EliteBook hooked up to an external HP monitor with a USB-C cable. Windows can see that the monitor is there in display settings, but the physical display is blank.I've tried swapping out the cable, and it's made no difference.To add to the matter, when I go into display settings on the EliteBook built-in screen, Windows says there are three monitors.Any help would be greatly appreciated.

:)

 

External monitor display settings

Hi,



Thank you for posting in Microsoft Community.



I understand that you are facing issues with the display scaling on your external displays. We will certainly look into this for you.

As you are using Vizio TV, you may have to try using custom resolution settings if the in-built settings do not provide the required settings.

For better clarity, please let us know:

• What is the version of Windows 10 that is currently installed on your computer? You can click on Search and type
  winver.
• Are you aware of any recent changes to the system, such as updates, after which you are facing this issue?
• What is the make and model of your computer?

Meanwhile, I would suggest you to check the steps mentioned in the Workaround section in

Windows scaling issues for high-DPI devices

I would also suggest you to check the Display drivers. Please refer

Troubleshoot external monitor connections in Windows 10

Set up dual monitors on Windows 10



Let us know how it goes.

Regards,

Vivian S

 

External Monitor with Quicken

Hi Mark,

It is possible that the display resolution automatically adjusts after connecting to an external monitor. For us to properly isolate this issue, we have some questions for you:

• Are you experiencing the same issue even without using the Quicken tool?
• Have you checked if the display resolution settings of the Surface device and the external monitor is the same?
• Have you tried checking for a graphics device driver update?
• What troubleshooting steps have you done to isolate the issue?
  

We're looking forward to your response.

 

External monitor is blurry

Hi,

The blurry display when using an external display may indicate a scaling issue. If the display of the internal monitor is not compatible with the external monitor, it may render a poor or fuzzy display. As an initial step, we suggest that you try the methods
under the Workaround section provided on this
support article.

Let us know should you need further assistance.