Computerhilfen.com: How do i get my duels screen back if i cant see through the1st screen?

I was trying to figure out my duel; screen and what happened was i accidentally turned it off. The issue is,i bought the wides screen to work with my busted laptop (http://www.computerhilfen.com/explanation-l-Laptop.html) cause the screen to that wasnt working, But now,each and every tinme i try to get to the main page instead of going to the wide screen it goes to the busted screen and I cant work my way out of it. My computer (http://www.computerhilfen.com/explanation-c-Computer.html) is a Toshiba laptop (http://www.computerhilfen.com/explanation-l-Laptop.html) with vistas.

My question is how would i go about restoring my duel screen options again? Without having to buy a new computer.

(http://www.computerhilfen.com/explanation-c-Computer.html)

..you have an english system, cause mine is German?
I think your Graphiccard Drive mite course a Problem, please check as your are driving a Laptop (http://www.computerhilfen.com/explanation-l-Laptop.html) its difficult to change the screen..?