sometimes black screen at mini displayport

[dadastar]

I have to minitors conneted to my laptop, one for hdmi cable and the other for mini display port.

it works good but if I try to stream a video, my monitor with mini display cable, go black, and i need to unplug and plug in again.

I can see in device manager, that the monitor that is connected with hdmi cable are using NVDIA geforce gtx 1050 newest driver and so I can see another graphic card intel HD graphic 630, my guess is the mini display port are using that one and the driver are from sep 2018, I have tried to download new driver from intel, but when I start install its saying that driver doesnt fit my pc and there is nothing on HP homepage also. what can I do to make this problem go away? sometimes my mini DP monitor also flickering, but do comes back.

[Echo_Lake]

@dadastar
Thank you for posting on the HP Support Community.

Don't worry as I'll be glad to help,  I have a few troubleshooting steps we could try to fix the issue:  

Firstly, let's perform Windows Update and HP Support Assistant: 

To check for updates now, select the Start button, and then go to Settings  > Update & security  > Windows Update, and select Check for updates.

Install updates from HP Support Assistant: Go to Download HP Support Assistant to install the tool.

1. To open HP Support Assistant, double-click the HP Support Assistant icon .
2. Click My devices in the top menu, and then click Updates in the My PC or My notebook pane.
3. Click Check for updates and messages to scan for new updates.
4. Review the list of updates. Updates with a yellow information icon are recommended. Updates with a blue information icon are optional.
5. Click the update name for a description, version number, and file size.
6. Select the box next to any updates you want to install, and then click Download and install.

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

[dadastar]

I have now done what you said, and no new driver Intel display driver comes up, only Intel Rapid storage driver, that do fail to install. but I guess that have nothing to do with the problem., and the main problem here is everytime I open netflix, HBO or just something that streams online, the screen with my mini dp goes black.

[Echo_Lake]

@dadastar
Thank you for posting back. 

Let's try this:
Check to see if Task Manager flickers

Press Ctrl + Alt + Delete to open Task Manager. If you don’t see Task Manager after pressing Ctrl + Alt + Delete, press Ctrl + Shift + Esc to open Task Manager.

• If Task Manager flickers along with everything else on the screen, a display driver is probably causing the problem. 
• If Task Manager doesn't flicker while the rest of the screen is flickering, an incompatible app is probably causing the problem.  

And, also choose a new refresh rate for your secondary monitor, just right-click on the Start button and choose Control Panel. If you’re an icon view, you can click directly on Display. > click on Change Display Settings. > click on Advanced Settings at the bottom right of the window. > Click on the Monitor and select Screen Refresh Rate.

Hope this helps! Keep me posted for further assistance.

[dadastar]

it didnt flicker at all in task manager.

I went to control panel, and I adjust the refresh rate from 60 to 40, still same problem if I open netflix, screen goes black, and I need to unplug mini dp cable and insert again.

[Echo_Lake]

@dadastar
Thank you for posting back. 

This sounds like hardware related issue with the system board,

I would request you to reach out to our Support and our Support Engineers should be able to sort this out. HP Support can be reached by clicking on the following link: www.hp.com/contacthp/

Please feel free to contact us here anytime you need any further assistance. Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.