(Dungeon Siege) Borderless Fullscreen?

I am looking to play Dungeon Siege in borderless fullscreen. This is especially important because the main menu screen is hard-locked to a low resolution (I think it’s 1024x768) so it makes my entire PC screw up.

The game is old and has no way to run in borderless fullscreen. Worse, I think it does some check for the actual window size, because I can’t run it in 1080p without it saying “the window is too big for my screen”.

Is there any way I can get around this? Is there any convenient way to run games in borderless windowed mode? Especially if they think they are running in fullscreen?