Typically, the word game “Minecraft” is displayed in windowed mode. This means that while the game is visible on the screen, you will not get the game to run at its full screen mode potential. But it is possible to resize using the built-in full screen mode in Windows to let the game “Minecraft” take control of everything you see on the computer monitor.
Click on the “Minecraft” screen to display the game.
Press “F11” on the keyboard to make the game full screen.
Press “F11” again to return to normal game size, if desired.