Hide the Users from the Windows LogOn Screen:

1. Open the Registry Editor:

2. Navigate to the following Key in the Registry:
HKEY_LOCAL_MACHINE --> Software --> Microsoft --> WindowsNT --> CurrentVersion --> Winlogon --> SpecialAccounts --> UserList

3. In the Right Pane add a new DWORD.

4. Rename the DWORD value to which user you want to hide.