Connect laptop to ultrawide screen?

I would like to connect my laptop to my ultrawide screen (35 inch, 3440 x 1440) via HDMI cable and use the full picture. I can only set this to max Full HD and I have a window in my widescreen.

Hence my question:

Is it possible to put the full HD picture, which comes from the laptop, on the entire widescreen with 21: 9?

I only need that for work, Outlook, Word etc… Therefore the picture does not have to be "perfect".

First, you should make sure that your screen is expanding in Windows. If you have selected "Mirror", the picture will adapt to the integrated screen of the laptop. The entire screen is used in this way.

The full resolution at 60Hz may not be supported. Most laptops only have one HDMI 1.4 port installed. It can do 1440p at 60Hz, but only in 16: 9 format. Since a 21: 9 monitor has more pixels, only 50Hz or 30Hz are possible.

With FullHD, 60Hz is also possible in 21: 9 format. The number of pixels is much lower.

You can dissolve a.o. Change Windows settings in the display. The 1440p resolution should be available there. If necessary, it automatically changes to 30Hz. FullHD should also be selectable there.

If "Extend the screen" is selected in Windows and the 1440p is not available, this could either be due to missing drivers or problems with communication between the laptop and the screen. When connecting via HDMI, it is negotiated which resolutions are supported.

You should double-check the connectors and plug them in again. If you have a different HDMI cable, you could try this one.

Depending on the age of the laptop or the GPU, HDMI 1.4 might not even be available. Thus no 1440p could be output. I think that the laptop has to be around 10 years old or the performance has to be very bad.

If your laptop has DisplayPort, you should connect your monitor to it. I can output higher resolution and frame rate via the port. Depending on the laptop, it can also be a Mini DisplayPort or a USB Type-C / Thunderbolt.

If your monitor doesn't have a DisplayPort, which I don't assume, there are adapters for it.

Thanks for the very detailed explanation! Extending the screen was the solution!