Plutonium

hey guys, hum..... i having some problems with my mw3/iw5, what's happening its basicly, i can't play with 2 monitor ( like, the game just kind bugs out and cut half of the screen off) and i can't change that on settings, its just...... dont work, my game freezes out, and i have to close the game in the "Alt+Tab" way ya'know, can some one help me???? thanks ( by the way, sorry if my english its kind broken ^_^)

someone could help me, I used the pluto IW5 more or less twice to play, I turned off the computer and turned it on the other day, the MW3 didn't work anymore, no more information text appears, pluto just crash and I can't play, help plz