External dispaly problem

[Rasko65]

Hello everyone

I have an HP laptop <HP Pavilion Gaming - 15-ec0024nm - 8PK23E, AMD® Picasso Ryzen 7 3750H Quad Core Processor, nVidia GeForce GTX 1660 Ti> and a Dell monitor <DELL LED P2719H>.
Since I bought a monitor, I am suffering from the following problem:

When I connect the laptop and monitor with the HDMI cable, the whole image is deformed (see image in attachment), the computer freezes and retards.
This is happening ONLY when the laptop is connected to the charger.

If the charger is disconnected, everything works perfectly fine.

I've tried connecting the laptop charger with a cable that does not have a grounding wire and it still does not work. I've tried using the same cable for the monitor, and also no luck.

[asmita6658]

Hi @Rasko65

Welcome to the HP Support Community. I'd be happy to assist you with the display issue.

Please try these steps to re-install the display driver - 

1) In the search box on the taskbar, type Device Manager, and then select Device Manager from the list of results.

2) In Device Manager, expand Display Adapter.

3) Right-click on the Display Adapter, and then select Uninstall device > Delete the driver software for this device check box > Uninstall.

4) Restart the computer.

Try updating the computer - 

Step 1 Windows Updates -

1) In the search box, type and open Windows Updates.

2) Check for updates.

3) If the updates are available, click on install and restart the computer.

Step 2 HP Support Assistant Updates -

1) In the search box, type and open HP Support Assistant.

2) Check for updates.

3) If the updates are available, click on install and restart the computer.

Also, try updating the BIOS. Refer to this document for steps - HP Consumer Notebook PCs - Updating the BIOS (Basic Input Output System) 

Hope this helps! Keep me posted. 

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Have a great day!