1440p resolution, you probably mean 1440x810(16:9), right?
Skyrim (and Enderal) is actually designed for 1920x1200(FullHD), but should handle similar 16:9 resolutions.
Your graphics card should also support 1920x1200.
What kind of monitor do you have, 16:9 or another aspect ratio?
The map does not work in the initial sequence, it would only be blue. The game should not crash when you open it.
What might help us is your EnderalPrefs.ini or the Launcher.log
If you mention the d3d9.dll in the error description, it is only active if you have activated "ENBoost" in the Settings / Optimization,
try it without.
Or do you have external graphics tools like MSI-Afterburner running? These may not work with "ENBoost" or "OneTweak".
Please deactivate such background programs.
Otherwise possibly DirectX is be damaged, install DirectX10 again (also on newer systems, e.g. Win10),
you can find it e.g. in the Enderal installation folder or
here.