I Just bought a new computer with Windows 8 already installed, started using it, and every 30 minutes after i booted it, it crashed. So i tried to restore the initial definitions of the computer by using the option to do so. While the computer was being restored, it crashed, and then started my problems. I booted the computer again, but now it goes automatically into automatic repair, goes to diagnose and the computer restarts, repeating the automatic repair "loop". I already tried shift+F8, it makes a screen appear for a few seconds saying to press ESC to get to the startup menu, no matter what i do at that moment the computer starts the "loop" again.Please Help Me!