I wanted to format my pc so i tryed to download windows 7 ultimate because i didnt had the cd. After I opened the setup and I installed the new windows. Showed up the menu that normally shows up when you install a new windows, then it deleted my files, and I set the time and that stuff and the computer restarted. After the restart didnt showed up the bar to put my password and directly entred the user and the pc started to restart over and over again. HELP!!!