Looking into this more, it may be your graphic driver. I would try to download the latest updates for your graphic driver. Here's a post I found on it here, https://forums.rpgmakerweb.com/index.php?threads/help-failed-to-initialize-graph...
His remedy was here - https://forums.rpgmakerweb.com/index.php?threads/help-failed-to-initialize-graph...
I suppose RPG Maker MZ, has a more updated graphical scope, which could mess with a lot of older window versions and graphic cards. I hope that helps you out, not only with our game but others you may have been having problems with. If it doesn't, then I'm still not sure what could be causing the issue, but at least it's more knowledge if anything else pops up heh.