Here I’m showing steps to hide a user account in Windows 7.

The user account can be hidden from welcome screen but can be used while sharing etc.

Steps

Create a new account from User Accounts

Make the following changes in registry

Goto HKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\CurrentVersion\Winlogon\SpecialAccounts\Userlist

Create a new “KEY”  if “SpecialAccounts” is not listed, under special accounts create “userlist” too (again KEY).

Create a new “Dword 32 Bit value” with name of the created account name with the default value  “0″ (Zero), If  Dword value is “1″  account will be shown.