Windows 10 stuck on PRE-logon screen. - Microsoft Community

i have windows 10 install, uefi using ssd's.  first, problem, have tried date.

problem:  machine boots until comes pre-logon screen.  screen shows "beach cave" small ethernet symbol lower right.  clear:  *not* login screen 3 little symbols @ lower right.  pre logon screen showing time , date , beach.

if press mouse button or keyboard button, pre-logon screen 'roll up' if going logon screen, reverts back.  if press , hold, "ctrl alt delete", can barely see logon screen flickers.  on release "ctrl alt delete", goes pre-logon screen.

attempted far without success:

1.  rebooting multiple times.

2.  f8 , shift f8, f10 , shift f10 safe mode 

3.  using windows recovery usb boot safe mode.  gives "choose operating system" error screen no option choose operating system.

4.  using windows recovery usb "repair" startup.

5.  using rstrui route login screen

6.  using net user set password blank go right through without needing login.

none of has helped attempts go right pre-login screen.  please me!

version of windows installed?
make , model of computer?

give following try within recovery environment.

click troubleshoot
click advanced options
click command prompt

@ command prompt, type:
net user administrator /active:yes

hit enter

close command prompt, restart, try signing administrator account.

see if can sign in, if not, should perform custom install:

how to: perform custom install of windows 10
http://answers.microsoft.com/en-us/insider/wiki...

Windows / Windows 10 / Windows Hello, lock screen & sign-in