I played MW2 for some hours then my screen went small

So i played MW2 on computer after some hours the Screen sudently were much smaller and i barely see things in front off me , can someone help me?
 
Could you explain in more detail? Computer specifics, desktop, laptop, hardware, the like. It could be that Windows decided to simply change your resolution options for you, and as such you have to change them back in your display options.
 
Details

Its a Laptop, Windows Vista, it works great but the screen is so little, i've tried ALT + ENTER but then it wont answer
 
Change your display options. Depending on what operating system you're running, you might just want to go to control panel and display, and then set your resolution higher than what it is now.
 
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