Auto Repair Loop BUG

Hello , i updated some updates for w8.1 and i got a message saying : restart is required for the updates to apply , and so i did.. Then i got the auto repair loop witch just when u turn on ur pc you get: Prepearing Automatic Repair, Diagnosing your pc(after)
And it says : there is a problem with turning on your pc. 2 options given (RESTART NOW/ADVANCE OPTIONS)
Alot of people had this problem , for more details : look up to youtube : windows 8 Automatic repair loop..
Can anyone help? cant access to my pc in a few days://