Windows 10's native installation makes you sign in while the computer is booting up. This is a waste of time. In order to stop the requested sign in, press the and the key at the same time. You will see the run window pop up in the lower left corner of your screen. Type . Another little screen will appear. In the upper right half of the screen there is a check box that says "Users must enter a user name and password to use this computer." Click on that box to remove the check mark. Click OK or Apply on the bottom, and reboot. It should not ask you for it again.
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