salam itdunya ka dosto mery sath ak masla hain kuch deen pely main nay laptop main windows 7 kia taa . per mujay ache nahi lage .is main baz softeare nahi chalte .to main nay ismain dobara windows xp kerna chaha to yee arror atta hian kay ap kay laptop main hardishnahi hain kia waja hain .per jab windows 7 installl karta hoon to installl hojati hain .per xp nahi q kia waja hain pehly is maon xp chaltee teee pls help me