Format you laptop and uninstall all gaming software. Run anti virus and install that software again. Then try to play games. It will definitely help you.
"Bring a hammer to it and get a new one!"
Hold on there cowboy, formating a personal computer should always be a last choice. Most common people have tons of data saved on their man hard drive and have no way to back it all up. And even then there's just the drag of reinstalling everything.
Also there's a chance that won't change a thing as it might be hardware related, or related to a specific software he needs.