Windows 7 game problem in windows 7

#1
hi all
i have laptop sony vaio vgn-cr320e
and i use windows 7 ultimate build 7100
all things ok but when i open any game the screen small than the normal screen
like these

soo pleezhelp me​
 


#2
Cant you change the resolution ingame? Might be a dumb suggestion, but I am making it anyway :)
 


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