I recently upgrade my Compaq Presario laptop from windows vista to windows 7, for gett8ing better gaming performance, which I heard that this OS is good for playing games. But after install windows 7 the system is occurring some problem regarding the graphical performance. The screen pixels are scattered whenever I open any game along with this problem is also occurs if I play any video. What should I do now to resolve this issue? What might be the cause of this problem? Suggest me some tricks to resolve this problem.
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