What output for 2560x1440?

[Big Chris]

I've just bought a Dell U2717D with a resolution of 2560x1440, which I intended to use via DisplayPort on my ageing Lenovo T410 laptop. However despite trying every trick in the book, I can't get the DP output to work in Windows 10.

So I'm in the market for a new laptop. What output does it need to have to run the Dell monitor at 2560x1440? Most of the laptops I'm looking at have HDMI outputs, but that will only go to 1920x1080 won't it? Some of the laptops I'm seeing also have USB-C ports which I've read can go above HD resolution, but the Dell doesn't have a USB-C input - unless there's a cable/adapter I can get?

Would appreciate any advice as I find this all very confusing and don't want to spend lots on a laptop that doesn't run the monitor!

 

[Big Chris]

That's the problem, I don't have any options on the laptop within Windows for DP. I've checked display settings and the Intel display software but nothing. Windows and the Intel software fail to recognise there's a second monitor there. The only reference I can find to DP is in BIOS, and having enabled it as the primary boot device I see the boot sequence on the monitor, but as soon as it gets to Windows it goes back to the laptop.

The laptop is about 6 years old and is on the latest BIOS, GPU drivers etc. I've spent the last few days looking for updated drivers for everything I can think of but I'm out of ideas. The T410 doesn't support Windows10 from what I understand (even though it runs) and they've long since stopped releasing drivers for the various components.

 

[Big Chris]

Going back to the original question, I've been told by someone that more recent HDMI outputs can handle 2560x1440, is this correct? Or would I need to use a USB-C > DisplayPort cable/adapter?