I wanna ask about a question!!firstly i'm using XP than i try change to vista!!but after that i feel that i prefer XP more than vista than i wan to change it back....when i wan to perform the installation for Xp it's start come out for blue screen!than it automatic close my com..after i try agian it's close again and again..after a few time i oni can on it back my com..!!than i try to change it back to vista but it's work....

may i ask wat is the problem??