Hi, i'm having a funny problem with W8. All of a sudden, it started to update, don't know why because i have disable automatic updates. When it restarted, took me to the welcome screen, which i also disabled. There i put my password, W8 accepts it, but inmediately it signs out and come back to the welcome screen over and over, can't go any further. Accesibility and shutdown buttons are disabled there, can't use them. Any idea? P.S. I'm on the road, so i didn't bring with me W8 dvd