hello everyone, I'm new here and needs some advice first i have a compaq pesario with an anthlon processor. I let a friend of mind change out my os to xp professional. its only been 4 mths since the change. now my computer just recently started freezing i can only type or get on the computer for minutes before it freezes. what causes this i'm about to go crazy i'm no computer guru so this is really frustrating can someone offer me some advice or help.