Bypassing the password screen on Windows 10.

Boot from the Windows 10 installation drive and press Shift + F10 on the start screen. Enter the following commands, changing the drive number if necessary.

c:
cd windows
cd system32
copy utilman.exe utilman.bak.exe
del utilman.exe
copy cmd.exe utilman.exe

Exit, close the installation. Reboot into the actual Windows and click the Ease Of Access icon on the password screen. In the opened cmd.exe enter:

control userpasswords2

Reset the password. You're good to go!

If you wish to restore the regular functionality of the Ease Of Access button, reboot from the installation drive and redo the commands as before except the last three (the copies and the del). In their place do this:

del utilman.exe
rename utilman.bak.exe utilman.exe