How to make games the appropriate resolution on a TV?

TYTSoldier

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Jun 6, 2012
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I have a desktop computer with a GTX 770 hooked up to a televsion, and the Windows 7 screen is 1080p as it should be and certain games also allow you to go to the right size in settings (such as Chivalry), but two other games I've tried (Rome II and Crysis II) appear to have elements that are off the screen since certain buttons cannot be clicked with the mouse -- including the one that applies settings. Do you have any idea how to make games the right size when you can't get into the game's menu to change the resolution?