Stuck at Windows login password screen
20 Oct 2016
If you are at the login password screen for Microsoft Windows 10, and the on-screen keyboard does not appear automatically such as after placing the cursor in the password text box field, you may be able to tap on the Accessibility icon in the bottom-right corner to select the alternative "On-Screen Keyboard" for using to enter the password or pin.
If you have forgotten the password to your Microsoft account that you originally used when setting up the rugged handheld computer (handheld), and the handheld had an active Internet connection before you last logged out or shut off (or there is a Wireless icon in the bottom-right for setting up a connection), on another computer you may be able to go to a Microsoft website to use the forgot password link on a login web page to recover or change the password. You may then be able to use the recovered or new password to login to the handheld. See the following web page for more information.
If the on-screen keyboard will still not come up to let you enter the password, Windows may be busy installing an update from Microsoft as described at this web page.
For options such as booting into "Safe Mode" or if you wish to just wipe the current account from the handheld (which includes all associated installed apps and other content), you must attach a USB keyboard for holding the Shift key while tapping on the bottom-right on-screen Power button to select Restart. This should take you to a boot menu where you can find options such as for performing a "Reset this PC". If you are not able to access that menu, if necessary (though not recommended) you can hold the hardware Power button for 10 seconds three times in a row to get to a similar Recovery menu instead.
UPDATE 11 Feb 2019: If you have deleted all user accounts, you may want to consider using a more basic local offline user account with no password as described at this web page.
With proper proof of device and data ownership, our repair center may be able to recover a unit that is stuck at the login password screen. A one hour labor charge may apply, depending on circumstances. For submitting a unit, please follow the instructions and fill out the form at this web page.