I got hp pavilion dv4 with preinstalled windows vista and today i wanted to custom the windows 7 , so i have restarted my laptop and after that the message "press any key to boot from cd rom" appeared and i have selected it and windows has started loading the files ,so loading of of files completed my laptop got powered off automatically i have tried the same process many times but some happened each time! so please help me out in this problem thanks
