bought a new toshiba satellite C855D-S5320 laptop with windows 8. took it out of the box, plugged it in,powered it up, and thought i was going to see windows 8 boot up similar to my old laptop with window xp on it. it ask me if I wanted to put in a username and password and i did. i hit the submit key and the screen went blank. i waited an while but nothing happened. i can still move the curser around on the screen but nothing happened. I tried to restart the computer and know what happens is I geta nice picture of the sky and tulips when powers up. i click on the screen and it brings me to my log in so i put in my password and click on the submit button. and the screen goes blank. please help me.