I format the computer and install a new windows, when I watch some video on youtube or or listening song, or a video from mobile it is slow, it is just like slow motion, I think I need a display driver or graphic , but I do not now where to find
Ok, you need to install the latest service pack for XP witch would be Service pack 3. You also might be better of running Firefox or Chrome as your main Browser. Your version of Ie is no longer supported. As far as your graphics Check the manufacture web site. Win xp is no longer supported by Microsoft. So there will be no more updates for it.