My Administrator User Account Does Not Comes On The Welcome Screen

1.Start the Registry Editor Go to:
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Winlogon \
SpecialAccounts \ UserList \

2.Right-click an empty space in the right pane and select New > DWORD Value Name the new value Administrator.

3.Double-click this new value, and enter 1 as it's Value data.

4.Close the registry editor and restart.