After installing technical preview, I was asked to setup an account to log in. Not wanting to do all the gruesome forms. I clicked use another option. It went something like use current/old/local account. After doing so it asked me to put in a password. I never set a password in the first place. I tried every password on earth I knew. Nada. I also got notifications say my login method was not allowed and I should contact an administrator. I am administrator. There is no option to redo the setup or go back. I'm locked out. Basically the PC is bricked. I can't pull up safe mode either. My only option is to redo it by booting from USB. Please fix thid anyone or help me. I also attempted shift restart. All options listed (start up options, cmd, refresh) need administrator. Problem is, there is no admin account because I CANT LOG ON. this is really getting on my nerves.