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Dell laptop won`t recognize my external monitor

Status: Closed | Case Number: 0000007 | Created By: Satya | Created Date: 2021-01-07 03:35:34 EST

Hello TS-Wiki,

This afternoon, my laptop (Dell 5540) stopped recognizing my external monitor. So, while the laptop is functional, it`s tough writing code on the small screen. I`ve used another laptop to confirm that the monitor and HDMI cable are fine. Also, I`ve run through all the latest Windows updates and the Dell Support Assist updates. Any chance you can take a look? I must be missing something.

Thank you!


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Posted: 2021-01-07 22:54:05 EST

The laptop is working properly now and can see the external monitor! I think your display adapter re-installation worked, but only after I shut the machine down. Not sure why, but a restart wasn`t enough.

Thanks for the help! You`re a lifesaver!



Posted: 2021-01-07 22:41:02 EST

I`m connecting directly to the monitor via HDMI cable (no dock). I uninstalled both display adapters (Intel and NVIDIA) from device manager and ran Dell Command Update/Support Assist to look for new drivers. Unfortunately, the laptop still won`t recognize the external monitor. Any other ideas?

Thank you

TS-Wiki Technical Support
Posted: 2021-01-07 06:22:07 EST

Hi Satya,

Are you connecting the monitor directly via HDMI port or docking station?

You can try to reinstall your graphic driver to see if help:

1. Open Start

2. Search for Device Manager and click the top result to open the app.

3. Double-click to expand the Display adapters branch.

4. Right-click the adapter, and select the Uninstall device option.

5. reboot machine

Install/update all drivers via Dell command update:

1. Download Dell Command | Update 4.0


2. Update driver (Include graphic driver) from the app

Please let us know again.


TS-Wiki Support


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