no users on login screen - solved
https://www.technibble.com/bypass-windows-logons-utilman/

1.
Use the Windows Vista or 7 DVD - Repair computer

2.
command promp

3.
C:\
cd windows\system32
ren utilman.exe utilman.exe.bak
copy cmd.exe utilman.exe

4.
cd windows\system32
cmd

5.
sfc /scannow

6.
restart




Creating a New User Account

To create a new user account in the Command Prompt (Username: NewGuy. Password: abc123), and add them to the Administrators usergroup type:
net user NewGuy abc123 /add
net localgroup Administrators NewGuy /add




login_without_password
https://www.raymond.cc/blog/login-to-windows-administrator-and-linux-root-account-without-knowing-or-changing-current-password/

cmd to login
https://www.raymond.cc/blog/backdoor-reset-administrator-password-add-new-user-windows-7/


http://www.techsupportalert.com/content/windows-7-startup.htm


http://superuser.com/questions/663531/can-i-create-a-windows-user-account-without-the-ability-for-an-interactive-user
https://www.techsupportall.com/how-to-enable-administrator-account-on-welcome-screen/
http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/the-system-cannot-find-message-text-for-message/ca9cf787-2ea6-4347-88be-fbfdd14ab625?auth=1
http://www.sevenforums.com/general-discussion/285771-user-profile-service-wont-start.html
http://www.sevenforums.com/tutorials/186131-user-profile-service-failed-logon-user-profile-cannot-loaded.html
http://windowssecrets.com/forums/showthread.php/144348-No-login-prompt-after-Windows-Update-reboot
https://raywoodcockslatest.wordpress.com/2014/03/21/server-execution-failed/
https://chentiangemalc.wordpress.com/2011/07/18/case-of-the-user-service-service-failed-the-logon/