dvi d to hdmi

I'm trying to connect a ThinkPad P15 (20YQ-0087US) laptop to an HP ZR30w monitor. The monitor is supposed to display 2560x1600 resolution. It's displaying 1280x800 instead, and Windows says that's the highest resolution it's capable of. I can't find specs for the ThinkPad's external display...

So I have a monitor flatron l1960tr and it has dvi d and d sub ports and my graphics card is gtx 1650 palit gaming pro and it only has hdmi ports, so I bought an adapter from HDMI to DVI D and my monitor can not detect it, it just says “check signal cable”. Can someone help me please, my...