screen res wont chang

i need to chang my screen res but it wont chang? imm geting pissed off at the thing help?

Since this was posted in a game I'm assuming your trying to change your resolution in a game?? If this is the case it varies on game but usually it's under options. If this is not concerning a game we are going to need more information about where you are trying to change the resolution.

Do remember that an LCD screen has only a certain amount of crystals available so your resolution can only have a certain maximum. (15” LCD is 1024*768)