Well we've been going out for 2 months and play world of warcraft a lot and she keeps pwning me on every mission calls me a noob and tells me "U mad bro?" everytime she beats me. Yesterday she beat me so bad I raged out of the game,threw my laptop on the ground after she called me a noob and haven't talked to her since.Now my laptop shows small black lines across the screen. Should I break up with her?

Seriously, though… you went on the internet seeking sympathy when you got all pissy & broke your laptop when your girlfriend called you a noob? You, son, ARE a noob.
Signed,
Knight Nigel Wellington XXI
OhhhhhhhhhhhhhHHHHHHhhh
Sounds like you need to take a break from both the game and the relationship if your ego isn't strong enough to accept that a girl beat you at a computer game.
Seriously.
I'm suprised your gf is with you in the first place, concidering you throw your shit around when you lose.
You sir, ARE a noob.