[RM2K3] CAN'T RUN GAMES FOR SOME REASON

It's also happening with RM2K though. Well, I can run the games in test play and anything, but when I do it doesn't recognize key inputs; in the title screen I can't move the cursor to choose Start, Load or Leave and the game after a bit begins on its own in Start. While in the map the character doesn't move when I press the keys or anything, nor I can access to the menu. At moments it moves un step down, but that's it. It must be an issue on my computer given it started happening with older makers as well. But I genuinely have no idea what's up. It suddenly started happening yesterday.

EDIT: For some reason I can access the menu just fine. But nothing else works.