Re: turn on computer without password
We would need more details - if a password wasn't set in the first place, then your computer should start normally without requiring a password. However, if a password has been set, then there is no legal way of getting into the desktop without having the password at hand - if there was, then the purpose of being able to set a password would be defeated.
If you're referring to other sign-in options that don't ask you to type a password or PIN, then that would depend on what operating version you have and what compatible software are installed that would support other sign-in options. For example, a Lenovo with Veriface installed in Windows 8.1 will automatically launch the webcam to detect the user's registered face during login, so the user won't have to type anything. Technically, that is still a password, but not the traditional typed type.
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