Does not detect second monitor

[SwissTre]

I purchased two new HP V28K Monitors. I have them both connected to display ports on my docking station but only one monitor will work at a time. Windows will say it can't detect the second monitor even though it will display it as monitor 2. I replaced one of the monitors with my old Acer monitor and they will both work, the new one and the old one with extended display but when I change my old monitor for the new one again, I get the same problem where it won't detect the new monitor. It will only work if I turn the other monitor off. I hope someone can help.

[banhien]

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@SwissTre wrote:

... I replaced one of the monitors with my old Acer monitor and they will both work, ..

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@SwissTre 

What is the resolution of your old monitor ? Looks like two 4K monitors are too much for your machine to display. What is your docking station ? Does it support 2 x 4K monitors ?

Regards.

[SwissTre]

The old monitor is 1920 x 1080. The laptop itself is an Elitebook with intel core i7 processor. It’s a work computer and relatively new so I don’t understand why it can’t support two 4K screens. The docking station is a HP docking station. I don’t know what model it is but it has two display ports... no HDMI. My laptop has a HDMI port but I can’t access it when it’s on the docking station.

[banhien]

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@SwissTre wrote:

....I don’t understand why it can’t support two 4K screens. ....

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@SwissTre 

I don't know what is your Elitebook with intel core i7 processor. The latest one could be G10 Intel processor with Intel® Iris® Plus Graphics 640

             https://www.intel.com.au/content/www/au/en/support/products/98911/graphics/graphics-for-7th-generati...

As you can see, it supports one 4K monitor, not 2. The dock may help a bit. What is your dock on the following list ?

             https://www8.hp.com/h20195/v2/getpdf.aspx/c04168358

Regards.

[SwissTre]

Hello,

It’s the ultraslim docking station.

So if my computer does not support two 4K screens then I purchased one screen too many? Is there any way of getting around it?

BR, TH