A new monitor can be a great thing, but your computer might not adjust its settings to take advantage of it automatically.
If your computer display suddenly gets too big, you can use these fixes to resolve this issue. Incorrect display resolution makes it difficult to work on a computer. The corrupt graphics card driver ...
If the Display option is missing from Windows Settings, follow the solutions mentioned below. Reboot the computer and see if that helps. If this issue is nothing but a glitch, rebooting the system ...