Use one of these programs :-
http://www.iobit.com/gamebooster.html ( GAMEBOOSTER 3.0,boost the game and gets up the speed,good to play while recording to movies)
http://www.eset.com/download/thank-y...=ess-v5-awards (ESET,it when u put full screen it boost as what game booster does,Recommended both using by same time.)
or do these steps for windows 7 or vista :-
Press Start
point at computer and right click,choose Properties
now press Advanced system settings
it will open a new window
press at Settings.. at the place of performance
it will open a new other window
Press Adjust for best performance
press apply then ok
close all
u got the TOP performance of ur pc,but it will effect in the theme and some stuff at the windows
and if u want to get it back to normal :-
Press Start
point at computer and right click,choose Properties
now press Advanced system settings
it will open a new window
press at Settings.. at the place of performance
it will open a new other window
Press Let windows choose what's best for my computer.
press apply then ok.
close all.
u got it back to normal.
Hope that helps,if didnt please download one of the programs up