OK so here is my problem, I accidentally turned off my pc during a windows update. I taught it was not a big problem until it started restarting but still I just said I'm gonna do a restore and then is done. But here comes another problem I don't know or have the system administrator password so I can't do anything not even enter cmd. I tried some obvious password but nothing worked. I am not home right now I am coming back in a few days there 2 things that I thought of one is to leave the password blank and try, or install windows 10 on a USB drive and put in my pc and install it. If u think any of this will work please tell me or if u have an another idea thats great. Thank you so much for the help.