My Presario CQ50 is acting strange when online and or using listening to music my screen is flickering . It lasts for about 10-15 seconds and stops , It has not done it when playing games just when lime wire is playing music and on internet . any one have any idea what might be the cause ? I am running windows 7 64 bit ( thanks to my dad trickson ) . Oh and also the touch pad no longe will open things when I tap on it Any one know why this is ?