How do you change the screen size on Windows 8?
Assuming you meant screen resolution, first go to Control Panel.
Then under 'Appearance and Personalisation', click on 'Adjust
screen resolution'. After that, next to 'Resolution', click on the
drop down menu. From there, adjust the slider until you find your
preferred screen resolution. Then, click the 'Apply' button.
Finally, the screen resolution will change and you will be given 15
seconds to decide if you still want that screen resolution. If by
15 seconds, you have not made a decision, the screen resolution
will be reverted to what it was like before.