hi i cant see half of my screen what do i do?

Your going to have to give a little more information on your problem if you want help with this.

If it's the game that you're talking about, then try and find setup>options.

Then change the screen size from there. You may have the screen proportions to large for your monitor, hence half of it hanging off the edge.

Are you using a Vista computer? If so, I think I have the answer.

Yea, as danjrdood said.

Vista has this bug that you cant see the half of the screen.
It fixes itself somehow, I dont remember how, I think you need to minimise/maximise it then it will be fixed.