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‎01-12-2019 02:21 AM - edited ‎01-17-2019 07:45 AM

HP Recommended
Product: EliteBook 850 G5 notebook
Operating System: Microsoft Windows 10 (64-bit)

When I just received my 850 G5 notebook, I did a quick test. I put a Thunderbolt-to-Displayport-dongle in the (USB-C shaped) Thunderbolt output of the notebook and connected my Dell monitor via a Displayport cable to the other side of the dongle. Instantly Windows recognized the external monitor and I could use it at its native resolution of 2560x1440 pixels. Great!

 

Then I did a clean reinstall of Windows 10 64-bit, using the built-in function of Windows 10 to do a clean install and wipe all personal data. Now I got a real clean, factory reset Windows 10 to work with.

 

Unfortunately, Windows doesn't recognize my external monitor anymore. When I plug in the dongle, I hear four tone melody of Windows recognizing a new device, then I hear the two tone melody (high - low) of Windows telling me something went wrong, and then I hear the four tone "recognize" melody again. And that's it. The monitor is not recognized and stays black. I don't even get an error message.

 

I tried installing all kind of drivers from HP's support, but that didn't help.

 

What do I need to do to get my Displayport external monitor to work again with this otherwise great laptop?

Many thanks in advance!

Maarten

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