Hi guys i need some help on reinstalling my computer. I was trying to fix my computer because it was missing samlib.dll so I dont know how to fix it and decide to use my system restore cd with windows xp on a stock hp computer with windows media center edition. Now when i start the computer it starts to a point when it says"invalid partortion driver" I m really lost plz give so advice on how to fix or reinstall the windows thx.