Well I recently upgraded my hard drive and so I re-installed Windows XP, downloaded all the updates, and there is a drivers CD that originally came with my PC so I just popped that in when I re-installed Windows and I thought it took care of all my drivers. Later while I was surfing the web I was reading a news article when I wanted to scroll down the scrolling was choppy and not very fluid. I first thought it was because of Internet Explorer or that particular website so I switched to Mozilla Firefox and tried other websites still the same thing, also when I watch videos -online and offline- I tried to maximize the video and it turns a little choppy it plays fast and the audio works great too but you can see like choppy lines when it is maximized. It not my mouse either because I tried other mouses with this PC and the same result and the when I use the scroll bar same thing. So then I though may my computer is just really slow but all my programs work really fast. And I have a broadband internet connection. I thought maybe it was a virus buy Kaspersky Security found nothing. i never had this problem before I upgrade my hard drive. So I thought my monitor looks likes it works fine so I checked Window's Install new hardware to see if I was missing any drives and it turn out I'm missing a VGA Controller[VGA Compatible] driver. I think it is for my graphics controller(I don't have a graphics card my motherboard has integrated graphics). So i went to my Monitors property to see the type of adapter I have and it says that the adapter info is unavailable. I have Biostar P4M800-M7A motherboard with and Intel Pentium 4 chipset. So can some one tell me what type of graphics controller I have for this motherboard and where I can download these drivers? Also it because I am missing this driver causes the choppy scrolling or am I just imagining it?