Yesterday i installed an Windows update and i restarted the computer right before i left, cos i were going out with some friends. When i came back it was off, and when i tried to turn it on it says "No bootable device -- insert boot cd". And i dont have a boot cd cos this computer had preinstalled windows 7. I can acces the Setup, but i dont know what to do there And I DONT WANT TO do anything which makes me lose all my stuff. Any ideas please?