Abhishukla

i had newly purchased hp pavillion dv2910tx and it comes with windows vista home premium. recently when i am trying to open one of my drive or any folder i am getting a message which says that windows explorer stopped working and it gets restarted. i tryed many thing to solve it but couldn't able to solve. as i had formatted my laptop and reinstalled windows vista. but the problem remains the same. and i am trying to install windows xp sp2. but after the cd gets booted then a message appears which says that windows couldn't detect any hard-drive connected to your computer. please some one help me.