Everything will work fine then all of the sudden the 'Num Lock' 'Caps Lock' and 'Scroll Lock' lights at the top right hand corner of my keyboard will light up and go out. After that the small keypad on the right will work without the light in 'Num Lock' being on. Then maybe 6 mins later it will happen again and so on. There is one thing that I have noticed. It seems to start doing this when I am on a video hosting website and stop after I have left the site. I'm not sure why this would make a difference. I just want to know whats going on. This has never happened before. I have an older HP.